DOCSLIB.ORG

SAGAR Group of Institution Bhopal Department of Computer Science & Engineering Microprocessor & Interfacing (CS-601)

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
SAGAR Group of Institution Bhopal Department of Computer Science & Engineering Microprocessor & Interfacing (CS-601) SAGAR Group of Institution Bhopal Department of Computer Science & Engineering Microprocessor & Interfacing (CS-601) UNIT -1 Important Question and answers Q1. What is Microprocessor Explain basic fundamental block of microprocessor? Ans : Microprocessor is a computer processor that incorporates the functions of a computer's central processing unit (CPU) on a single integrated circuit (IC).the microprocessor is a multipurpose, programmable device that accepts digital data as input, processes it according to instructions stored in its memory, and provides results as output. It is an example of sequential digital logic, as it has internal memory. Microprocessors operate on numbers and symbols represented in the binary numeral system. CU ALU Register Bank Architecture of Microprocessor A) ALU: The arithmetic-logic unit is a combinational network that performs arithmetic and logical Operations on the data. • ALU performs all arithmetic and logic operations on data. • The size of ALU defines the size of the microprocessor. • For example Intel 8086 is a 16-bit microprocessor since its ALU 16-bits wide. Intel 8088 is also a 16-bit microprocessor even though its data bus is 8-bits wide. That is because of its 16-bit ALU • Some 32-bit microprocessors like Motorola 68030 include multiple ALUs for Parallel operations to achieve faster speed. B) Control Unit: It decodes each instruction and under the supervision of a clock controls the external and Internal units ensuring correct logical operation of the system. The CU performs basically two tasks: 1.Instruction interpretation: i) CU reads instruction from memory using PC ii) It then recognizes the instruction type, gets necessary operands, and routes then to appropriate functional units of execution unit iii) Necessary signals are issued to perform desired operation iv) Results are routed to the specified destination. 2. Instruction Sequencing: The CU determines the address of the next instruction to be executed and loads it Into PC. The CU is designed using one of the two techniques: i) Hardwired Control Designed by physically connecting typical components such as gated and flipflops. For example, Zilog’s 16-bit Z8000 ii) Microprogramming This type of CUs include a control ROM for translating the instructions. Intel’s 8086 is a microprogrammed microprocessor B) Register Bank: A number of registers are normally included in the microprocessor. These are used for temporary storage of data, instructions and addresses during execution of a program. Q.2 what is the difference between RISC and CISC Architecture. Ans RISC (Reduced Instruction Set Computing) and CISC (Complex Instruction Set Computing) are two computer architectures that are predominantly used nowadays. The main difference between RISC and CISC is in the number of computing cycles each of their instructions take. With CISC, each instruction may utilize a much greater number of cycles before completion than in RISC. The reason behind the difference in number of cycles utilized is the complexity and goal of their instructions. In RISC, each instruction is only meant to achieve a very small task. So if you want a complex task done, then you need a lot of these instructions strung together. With CISC, each instruction is similar to a high level language code. You only need a few instructions to get what you want as each instruction does a lot. In terms of the list of available instructions, RISC has the longer one over CISC. This is because each small step may need a separate instruction, unlike in CISC where a single instruction would already cover multiple steps. Although CISC may be easier for programmers, it also has its downside. Using CISC may not be as efficient as when you use RISC. This is because inefficiencies in the CISC code will then be used again and again, leading to wasted cycles. Using RISC allows the programmer to remove unnecessary code and prevent wasting cycles. 1. CISC instructions utilize more cycles than RISC 2. CISC has way more complex instructions than RISC 3. CISC typically has fewer instructions than RISC 4. CISC implementations tend to be slower than RISC implementations 5. Computers typically use CISC while tablets, smart phones and other devices use RISC Q.3 What is the difference between microprocessor and microcomputer? Ans : Microprocessor: Microprocessor is a simple central processing unit (CPU) on a single chip. It includes Arithmetic logic unit (ALU), control unit (CU), registers, instruction decoders, bus control circuit etc. but everything should be on a single chip. Microcomputer: A microcomputer is the association of microprocessor and the peripheral I/O devices, support circuitry and memory (both data and program). It is not necessary to be on a single chip. So we can say that: 1. Microprocessor is one component of the microcomputer. 2. Microcomputer is a complete computer similar to any other computer. 3. The term peripheral is used for input/output devices. Q.4 Define bit, byte, word and instruction. Ans : Bit = Binary digit = 0 or 1 Byte = a sequence of 8 bits = 00000000, 00000001, ..., or 11111111 Word = a sequence of N bits where N = 16, 32, 64 depending on the computer Instruction: An instruction is an order given to a computer processor by a computer program. At the lowest level, each instruction is a sequence of 0s and 1s that describes a physical operation the computer is to perform (such as "Add") and, depending on the particular instruction type, the specification of special storage areas called registers that may contain data to be used in carrying out the instruction, or the location in computer memory of data. Q.1 Explain purpose of Registers. Also explain different types of register and their work. Ans: A number of registers are normally included in the microprocessor. These are used for temporary storage of data, instructions and addresses during execution of a program. Different types of register are (i) Accumulator (Acc) or Result Register: This is an 8-bit register used in various arithmetic and logical operations. Out of the two operands to be operated upon, one comes from accumulator (Acc), whilst the other one may be in another internal register or may be brought in by the data bus from the main memory. Upon completion of the arithmetic/logical operation, the result is placed in the accumulator (replacing the earlier operand). Because of the later function, this register is also called as result register. (ii) General Purpose Registers or Scratch Pad Memory There are six general purpose 8-bit registers that can be used by the programmer for a variety of purposes. These registers, labelled as B, C, D, E, H and L, can be used individually (e.g., when operation on 8-bit data is desired) or in pairs (e.g., when a 16-bit address is to be stored). Only B-C, D-E and H-L pairs are allowed. in case of 8086 All the general purpose registers are 16 bit in size ,8086 general purpose registers are AX,BX,CX,DX. (iii) Instruction Register (IR) This 8-bit register stores the next instruction to be executed. At the proper time this stored word (instruction) is fed to an instruction decoder which decodes it and supplied appropriate signals to the control unit. When the execution has been accomplished the new word in the instruction register is processed. (iv) Program Counter (PC) This is a 16-bit register which holds the address of the next instruction that has to be fetched from the main memory and loaded into the instruction register. The program controlling the operation is stored in the main memory and instructions are retrieved from this memory normally in order. Therefore, normally the address contained in the PC is incremented after each instruction is fetched. However, certain classes of instruction can modify the PC so that the programmer can provide for branching away from the normal program flow. Examples are instructions in the “jump” and ‘call subroutine’ groups. (v) Stack Pointer (SP) This is also a 16-bit register and is used by the programmer to maintain a stack in the memory while using subroutines. (vi) Status Register or Condition Flags A status register consisting of a few flip-flops, called as condition flags (in 8085 the number of flags is five) is used to provide indication of certain conditions that arise during arithmetic and logical operations. Q.5 Explain the evolution of Microprocessor and its application. Ans. Evolution of Microprocessor: The first microprocessor was introduced in the year 1971. It was introduced by Intel and was named Intel 4004.Intel 4004 is a 4 bit microprocessor and it was not a powerful microprocessor. It can perform addition and subtraction operation on 4 bits at a time. However it was Intel’s 8080 was the first microprocessor to make it to Home computers. It was introduced during the year 1974 and it can perform 8 bit operations. Then during the year 1976, Intel introduced 8085 processors which is nothing but an update of 8080 processors.8080 processors are updated by adding two Enable/Disable Instructions, Three added interrupt pins and serial I/O pins. Intel introduced 8086 pins during the year 1976. The major difference between 8085 and 8086 processor is that 8085 is an 8 bit processor, but 8086 processor is a 16 bit processor. The greatest advantage of the above processors are that it do not contain Floating point instructions. Here floating point refers to the radix point or decimal point. For example: 123.456 is a floating point representation. Processors .
Load more

Recommended publications
  • Intel 8080 Datasheet
    infel.. 8080A/8080A-1/8080A-2 8-BIT N-CHANNEL MICROPROCESSOR • TTL Drive Capability • Decimal, Binary, and Double Precision • 2,..,s (-1:1.3,..,s, -2:1.5 ,..,s) Instruction Arithmetic Cycle • Ability to Provide Priority Vectored • Powerful Problem Solving Instruction Interrupts Set • 512 Directly Addressed 110 Ports 6 General Purpose Registers and an Available In EXPRESS • Accumulator • - Standard Temperature Range 16-Blt Program Counter for Directly Available In 4Q-Lead Cerdlp and Plastic • Addressing up to 64K Bytes of Memory • Packages 16-Blt Stack Pointer and Stack (See Packaging Spec. Order #231369) • Manipulation Instructions for Rapid Switching of the Program Environment • The Intel 8080A is a complete 8-bit parallel central processing unit (CPU). It is fabricated on a single LSI chip using Intel's n-channel silicon gate MOS process. This offers the user a high performance solution to control and processing applications. The 8080A contains 6 8-bit general purpose working registers and an accumulator. The 6 general purpose registers may be addressed individually or in pairs providing both single and double precision operators. Arithmetic and logical instructions set or reset 4 testable flags. A fifth flag provides decimal arithmetic opera­ tion. The 8080A has an external stack feature wherein any portion of memory may be used as a last in/first out stack to store/retrieve the contents of the accumulator, flags, program counter, and all of the 6 general purpose registers. The 16-bit stack pointer controls the addressing of this external stack. This stack gives the 8080A the ability to easily handle multiple level priority interrupts by rapidly storing and restoring processor status.
    [Show full text]
  • 45-Year CPU Evolution: One Law and Two Equations
    45-year CPU evolution: one law and two equations Daniel Etiemble LRI-CNRS University Paris Sud Orsay, France [email protected] Abstract— Moore’s law and two equations allow to explain the a) IC is the instruction count. main trends of CPU evolution since MOS technologies have been b) CPI is the clock cycles per instruction and IPC = 1/CPI is the used to implement microprocessors. Instruction count per clock cycle. c) Tc is the clock cycle time and F=1/Tc is the clock frequency. Keywords—Moore’s law, execution time, CM0S power dissipation. The Power dissipation of CMOS circuits is the second I. INTRODUCTION equation (2). CMOS power dissipation is decomposed into static and dynamic powers. For dynamic power, Vdd is the power A new era started when MOS technologies were used to supply, F is the clock frequency, ΣCi is the sum of gate and build microprocessors. After pMOS (Intel 4004 in 1971) and interconnection capacitances and α is the average percentage of nMOS (Intel 8080 in 1974), CMOS became quickly the leading switching capacitances: α is the activity factor of the overall technology, used by Intel since 1985 with 80386 CPU. circuit MOS technologies obey an empirical law, stated in 1965 and 2 Pd = Pdstatic + α x ΣCi x Vdd x F (2) known as Moore’s law: the number of transistors integrated on a chip doubles every N months. Fig. 1 presents the evolution for II. CONSEQUENCES OF MOORE LAW DRAM memories, processors (MPU) and three types of read- only memories [1]. The growth rate decreases with years, from A.
    [Show full text]
  • Appendix D an Alternative to RISC: the Intel 80X86
    D.1 Introduction D-2 D.2 80x86 Registers and Data Addressing Modes D-3 D.3 80x86 Integer Operations D-6 D.4 80x86 Floating-Point Operations D-10 D.5 80x86 Instruction Encoding D-12 D.6 Putting It All Together: Measurements of Instruction Set Usage D-14 D.7 Concluding Remarks D-20 D.8 Historical Perspective and References D-21 D An Alternative to RISC: The Intel 80x86 The x86 isn’t all that complex—it just doesn’t make a lot of sense. Mike Johnson Leader of 80x86 Design at AMD, Microprocessor Report (1994) © 2003 Elsevier Science (USA). All rights reserved. D-2 I Appendix D An Alternative to RISC: The Intel 80x86 D.1 Introduction MIPS was the vision of a single architect. The pieces of this architecture fit nicely together and the whole architecture can be described succinctly. Such is not the case of the 80x86: It is the product of several independent groups who evolved the architecture over 20 years, adding new features to the original instruction set as you might add clothing to a packed bag. Here are important 80x86 milestones: I 1978—The Intel 8086 architecture was announced as an assembly language– compatible extension of the then-successful Intel 8080, an 8-bit microproces- sor. The 8086 is a 16-bit architecture, with all internal registers 16 bits wide. Whereas the 8080 was a straightforward accumulator machine, the 8086 extended the architecture with additional registers. Because nearly every reg- ister has a dedicated use, the 8086 falls somewhere between an accumulator machine and a general-purpose register machine, and can fairly be called an extended accumulator machine.
    [Show full text]
  • The Birth, Evolution and Future of Microprocessor
    The Birth, Evolution and Future of Microprocessor Swetha Kogatam Computer Science Department San Jose State University San Jose, CA 95192 408-924-1000 [email protected] ABSTRACT timed sequence through the bus system to output devices such as The world's first microprocessor, the 4004, was co-developed by CRT Screens, networks, or printers. In some cases, the terms Busicom, a Japanese manufacturer of calculators, and Intel, a U.S. 'CPU' and 'microprocessor' are used interchangeably to denote the manufacturer of semiconductors. The basic architecture of 4004 same device. was developed in August 1969; a concrete plan for the 4004 The different ways in which microprocessors are categorized are: system was finalized in December 1969; and the first microprocessor was successfully developed in March 1971. a) CISC (Complex Instruction Set Computers) Microprocessors, which became the "technology to open up a new b) RISC (Reduced Instruction Set Computers) era," brought two outstanding impacts, "power of intelligence" and "power of computing". First, microprocessors opened up a new a) VLIW(Very Long Instruction Word Computers) "era of programming" through replacing with software, the b) Super scalar processors hardwired logic based on IC's of the former "era of logic". At the same time, microprocessors allowed young engineers access to "power of computing" for the creative development of personal 2. BIRTH OF THE MICROPROCESSOR computers and computer games, which in turn led to growth in the In 1970, Intel introduced the first dynamic RAM, which increased software industry, and paved the way to the development of high- IC memory by a factor of four.
    [Show full text]
  • Professor Won Woo Ro, School of Electrical and Electronic Engineering Yonsei University the Intel® 4004 Microprocessor, Introdu
    Professor Won Woo Ro, School of Electrical and Electronic Engineering Yonsei University The 1st Microprocessor The Intel® 4004 microprocessor, introduced in November 1971 An electronics revolution that changed our world. There were no customer‐ programmable microprocessors on the market before the 4004. It propelled software into the limelight as a key player in the world of digital electronics design. 4004 Microprocessor Display at New Intel Museum A Japanese calculator maker (Busicom) asked to design: A set of 12 custom logic chips for a line of programmable calculators. Marcian E. "Ted" Hoff Recognized the integrated circuit technology (of the day) had advanced enough to build a single chip, general purpose computer. Federico Faggin to turn Hoff's vision into a silicon reality. (In less than one year, Faggin and his team delivered the 4004, which was introduced in November, 1971.) The world's first microprocessor application was this Busicom calculator. (sold about 100,000 calculators.) Measuring 1/8 inch wide by 1/6 inch long, consisting of 2,300 transistors, Intel’s 4004 microprocessor had as much computing power as the first electronic computer, ENIAC. 2 inch 4004 and 12 inch Core™2 Duo wafer ENIAC, built in 1946, filled 3000‐cubic‐ feet of space and contained 18,000 vacuum tubes. The 4004 microprocessor could execute 60,000 operations per second Running frequency: 108 KHz Founders wanted to name their new company Moore Noyce. However the name sounds very much similar to “more noise”. "Only the paranoid survive". Moore received a B.S. degree in Chemistry from the University of California, Berkeley in 1950 and a Ph.D.
    [Show full text]
  • High-Performance Decimal Floating-Point Units
    UNIVERSIDADE DE SANTIAGO DE COMPOSTELA DEPARTAMENTO DE ELECTRONICA´ E COMPUTACION´ PhD. Dissertation High-Performance Decimal Floating-Point Units Alvaro´ Vazquez´ Alvarez´ Santiago de Compostela, January 2009 To my family A´ mina˜ familia Acknowledgements It has been a long way to see this thesis successfully concluded, at least longer than what I imagined it. Perhaps the moment to thank and acknowledge everyone’s contributions is the most eagerly awaited. This thesis could not have been possible without the support of several people and organizations whose contributions I am very grateful. First of all, I want to express my sincere gratitude to my thesis advisor, Elisardo Antelo. Specially, I would like to emphasize the invaluable support he offered to me all these years. His ideas and contributions have a major influence on this thesis. I would like to thank all people in the Departamento de Electronica´ e Computacion´ for the material and personal help they gave me to carry out this thesis, and for providing a friendly place to work. In particular, I would like to mention to Prof. Javier D. Bruguera and the other staff of the Computer Architecture Group. Many thanks to Paula, David, Pichel, Marcos, Juanjo, Oscar,´ Roberto and my other workmates for their friendship and help. I am very grateful to IBM Germany for their financial support though a one-year research contract. I would like to thank Ralf Fischer, lead of hardware development, and Peter Roth and Stefan Wald, team managers at IBM Deutchland Entwicklung in Boblingen.¨ I would like to extend my gratitude to the FPU design team, in special to Silvia Muller¨ and Michael Kroner,¨ for their help and the warm welcome I received during my stay in Boblingen.¨ I would also like to thank Eric Schwarz from IBM for his support.
    [Show full text]
  • How Microprocessors Work E 1 of 64 ZM
    How Microprocessors Work e 1 of 64 ZM How Microprocessors Work ZAHIDMEHBOOB +923215020706 [email protected] 2003 BS(IT) PRESTION UNIVERSITY How Microprocessors Work The computer you are using to read this page uses a microprocessor to do its work. The microprocessor is the heart of any normal computer, whether it is a desktop machine, a server or a laptop. The microprocessor you are using might be a Pentium, a K6, a PowerPC, a Sparc or any of the many other brands and types of microprocessors, but they all do approximately the same thing in approximately the same way. If you have ever wondered what the microprocessor in your computer is doing, or if you have ever wondered about the differences between types of microprocessors, then read on. Microprocessor History A microprocessor -- also known as a CPU or central processing unit -- is a complete computation engine that is fabricated on a single chip. The first microprocessor was the Intel [email protected] +923215020706 (2003) How Microprocessors Work e 2 of 64 ZM 4004, introduced in 1971. The 4004 was not very powerful -- all it could do was add and subtract, and it could only do that 4 bits at a time. But it was amazing that everything was on one chip. Prior to the 4004, engineers built computers either from collections of chips or from discrete components (transistors wired one at a time). The 4004 powered one of the first portable electronic calculators. The first microprocessor to make it into a home computer was the Intel 8080, a complete 8- bit computer on one chip, introduced in 1974.
    [Show full text]
  • Communication Theory II
    Microprocessor (COM 9323) Lecture 2: Review on Intel Family Ahmed Elnakib, PhD Assistant Professor, Mansoura University, Egypt Feb 17th, 2016 1 Text Book/References Textbook: 1. The Intel Microprocessors, Architecture, Programming and Interfacing, 8th edition, Barry B. Brey, Prentice Hall, 2009 2. Assembly Language for x86 processors, 6th edition, K. R. Irvine, Prentice Hall, 2011 References: 1. Computer Architecture: A Quantitative Approach, 5th edition, J. Hennessy, D. Patterson, Elsevier, 2012. 2. The 80x86 Family, Design, Programming and Interfacing, 3rd edition, Prentice Hall, 2002 3. The 80x86 IBM PC and Compatible Computers, Assembly Language, Design, and Interfacing, 4th edition, M.A. Mazidi and J.G. Mazidi, Prentice Hall, 2003 2 Lecture Objectives 1. Provide an overview of the various 80X86 and Pentium family members 2. Define the contents of the memory system in the personal computer 3. Convert between binary, decimal, and hexadecimal numbers 4. Differentiate and represent numeric and alphabetic information as integers, floating-point, BCD, and ASCII data 5. Understand basic computer terminology (bit, byte, data, real memory system, protected mode memory system, Windows, DOS, I/O) 3 Brief History of the Computers o1946 The first generation of Computer ENIAC (Electrical and Numerical Integrator and Calculator) was started to be used based on the vacuum tube technology, University of Pennsylvania o1970s entire CPU was put in a single chip. (1971 the first microprocessor of Intel 4004 (4-bit data bus and 2300 transistors and 45 instructions) 4 Brief History of the Computers (cont’d) oLate 1970s Intel 8080/85 appeared with 8-bit data bus and 16-bit address bus and used from traffic light controllers to homemade computers (8085: 246 instruction set, RISC*) o1981 First PC was introduced by IBM with Intel 8088 (CISC**: over 20,000 instructions) microprocessor oMotorola emerged with 6800.
    [Show full text]
  • Programmable Digital Microcircuits - a Survey with Examples of Use
    - 237 - PROGRAMMABLE DIGITAL MICROCIRCUITS - A SURVEY WITH EXAMPLES OF USE C. Verkerk CERN, Geneva, Switzerland 1. Introduction For most readers the title of these lecture notes will evoke microprocessors. The fixed instruction set microprocessors are however not the only programmable digital mi• crocircuits and, although a number of pages will be dedicated to them, the aim of these notes is also to draw attention to other useful microcircuits. A complete survey of programmable circuits would fill several books and a selection had therefore to be made. The choice has rather been to treat a variety of devices than to give an in- depth treatment of a particular circuit. The selected devices have all found useful ap• plications in high-energy physics, or hold promise for future use. The microprocessor is very young : just over eleven years. An advertisement, an• nouncing a new era of integrated electronics, and which appeared in the November 15, 1971 issue of Electronics News, is generally considered its birth-certificate. The adver• tisement was for the Intel 4004 and its three support chips. The history leading to this announcement merits to be recalled. Intel, then a very young company, was working on the design of a chip-set for a high-performance calculator, for and in collaboration with a Japanese firm, Busicom. One of the Intel engineers found the Busicom design of 9 different chips too complicated and tried to find a more general and programmable solu• tion. His design, the 4004 microprocessor, was finally adapted by Busicom, and after further négociation, Intel acquired marketing rights for its new invention.
    [Show full text]
  • Introduction to Cpu
    microprocessors and microcontrollers - sadri 1 INTRODUCTION TO CPU Mohammad Sadegh Sadri Session 2 Microprocessor Course Isfahan University of Technology Sep., Oct., 2010 microprocessors and microcontrollers - sadri 2 Agenda • Review of the first session • A tour of silicon world! • Basic definition of CPU • Von Neumann Architecture • Example: Basic ARM7 Architecture • A brief detailed explanation of ARM7 Architecture • Hardvard Architecture • Example: TMS320C25 DSP microprocessors and microcontrollers - sadri 3 Agenda (2) • History of CPUs • 4004 • TMS1000 • 8080 • Z80 • Am2901 • 8051 • PIC16 microprocessors and microcontrollers - sadri 4 Von Neumann Architecture • Same Memory • Program • Data • Single Bus microprocessors and microcontrollers - sadri 5 Sample : ARM7T CPU microprocessors and microcontrollers - sadri 6 Harvard Architecture • Separate memories for program and data microprocessors and microcontrollers - sadri 7 TMS320C25 DSP microprocessors and microcontrollers - sadri 8 Silicon Market Revenue Rank Rank Country of 2009/2008 Company (million Market share 2009 2008 origin changes $ USD) Intel 11 USA 32 410 -4.0% 14.1% Corporation Samsung 22 South Korea 17 496 +3.5% 7.6% Electronics Toshiba 33Semiconduc Japan 10 319 -6.9% 4.5% tors Texas 44 USA 9 617 -12.6% 4.2% Instruments STMicroelec 55 FranceItaly 8 510 -17.6% 3.7% tronics 68Qualcomm USA 6 409 -1.1% 2.8% 79Hynix South Korea 6 246 +3.7% 2.7% 812AMD USA 5 207 -4.6% 2.3% Renesas 96 Japan 5 153 -26.6% 2.2% Technology 10 7 Sony Japan 4 468 -35.7% 1.9% microprocessors and microcontrollers
    [Show full text]
  • (J. Bayko) Date: 12 Jun 92 18:49:18 GMT Newsgroups: Alt.Folklore.Computers,Comp.Arch Subject: Great Microprocessors of the Past and Present
    From: [email protected] (J. Bayko) Date: 12 Jun 92 18:49:18 GMT Newsgroups: alt.folklore.computers,comp.arch Subject: Great Microprocessors of the Past and Present I had planned to submit an updated version of the Great Microprocessor list after I’d completed adding new processors, checked out little bits, and so on... That was going to take a while... But then I got to thinking of all the people stuck with the origional error-riddled version. All these poor people who’d kept it, or perhaps placed in in an FTP site, or even - using it for reference??! In good conscience, I decided I can’t leave that erratic old version lying out there, where people might think it’s accurate. So here is an interim release. There will be more to it later - the 320xx will be included eventually, for example. But at least this has been debugged greatly. Enjoy... John Bayko. — Great Microprocessors of the Past and Present (V 3.2.1) Section One: Before the Great Dark Cloud. ————————— Part I: The Intel 4004 (1972) The first single chip CPU was the Intel 4004, a 4-bit processor meant for a calculator. It processed data in 4 bits, but its instructions were 8 bits long. Internally, it featured four 12 bit(?) registers which acted as an internal evaluation stack. The Stack Pointer pointed to one of these registers, not a memory location (only CALL and RET instructions operated on the Stack Pointer). There were also sixteen 4-bit (or eight 8-bit) general purpose registers The 4004 had 46 instructions.
    [Show full text]
  • A Hybrid-Parallel Architecture for Applications in Bioinformatics
    A Hybrid-parallel Architecture for Applications in Bioinformatics M.Sc. Jan Christian Kässens Dissertation zur Erlangung des akademischen Grades Doktor der Ingenieurwissenschaften (Dr.-Ing.) der Technischen Fakultät der Christian-Albrechts-Universität zu Kiel eingereicht im Jahr 2017 Kiel Computer Science Series (KCSS) 2017/4 dated 2017-11-08 URN:NBN urn:nbn:de:gbv:8:1-zs-00000335-a3 ISSN 2193-6781 (print version) ISSN 2194-6639 (electronic version) Electronic version, updates, errata available via https://www.informatik.uni-kiel.de/kcss The author can be contacted via [email protected] Published by the Department of Computer Science, Kiel University Computer Engineering Group Please cite as: Ź Jan Christian Kässens. A Hybrid-parallel Architecture for Applications in Bioinformatics Num- ber 2017/4 in Kiel Computer Science Series. Department of Computer Science, 2017. Dissertation, Faculty of Engineering, Kiel University. @book{Kaessens17, author = {Jan Christian K\"assens}, title = {A Hybrid-parallel Architecture for Applications in Bioinformatics}, publisher = {Department of Computer Science, CAU Kiel}, year = {2017}, number = {2017/4}, doi = {10.21941/kcss/2017/4}, series = {Kiel Computer Science Series}, note = {Dissertation, Faculty of Engineering, Kiel University.} } © 2017 by Jan Christian Kässens ii About this Series The Kiel Computer Science Series (KCSS) covers dissertations, habilitation theses, lecture notes, textbooks, surveys, collections, handbooks, etc. written at the Department of Computer Science at Kiel University. It was initiated in 2011 to support authors in the dissemination of their work in electronic and printed form, without restricting their rights to their work. The series provides a unified appearance and aims at high-quality typography. The KCSS is an open access series; all series titles are electronically available free of charge at the department’s website.
    [Show full text]