History of Computing 2, Dominick and Phong
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Microprocessors in the 1970'S
Part II 1970's -- The Altair/Apple Era. 3/1 3/2 Part II 1970’s -- The Altair/Apple era Figure 3.1: A graphical history of personal computers in the 1970’s, the MITS Altair and Apple Computer era. Microprocessors in the 1970’s 3/3 Figure 3.2: Andrew S. Grove, Robert N. Noyce and Gordon E. Moore. Figure 3.3: Marcian E. “Ted” Hoff. Photographs are courtesy of Intel Corporation. 3/4 Part II 1970’s -- The Altair/Apple era Figure 3.4: The Intel MCS-4 (Micro Computer System 4) basic system. Figure 3.5: A photomicrograph of the Intel 4004 microprocessor. Photographs are courtesy of Intel Corporation. Chapter 3 Microprocessors in the 1970's The creation of the transistor in 1947 and the development of the integrated circuit in 1958/59, is the technology that formed the basis for the microprocessor. Initially the technology only enabled a restricted number of components on a single chip. However this changed significantly in the following years. The technology evolved from Small Scale Integration (SSI) in the early 1960's to Medium Scale Integration (MSI) with a few hundred components in the mid 1960's. By the late 1960's LSI (Large Scale Integration) chips with thousands of components had occurred. This rapid increase in the number of components in an integrated circuit led to what became known as Moore’s Law. The concept of this law was described by Gordon Moore in an article entitled “Cramming More Components Onto Integrated Circuits” in the April 1965 issue of Electronics magazine [338]. -
Chapter 1 Microcontrollers
Chapter 1 Microcontrollers: Yesterday, Today, and Tomorrow 1.1 Defining Microcontrollers It is said that from the definition everything true about the con- cept follows. Therefore, at the outset let us take a brief review of how the all-pervasive microcontroller has been defined by various technical sources. A microcontroller (or MCU) is a computer-on-a-chip used to con- trol electronic devices. It is a type of microprocessor emphasizing self-sufficiency and cost-effectiveness, in contrast to a general-purpose microprocessor (the kind used in a PC). A typical microcontroller con- tains all the memory and interfaces needed for a simple application, whereas a general purpose microprocessor requires additional chips to provide these functions. .(Wikipedia [1]) A highly integrated chip that contains all the components compris- ing a controller. Typically this includes a CPU, RAM, some form of ROM, I/O ports, and timers. Unlike a general-purpose computer, which also includes all of these components, a microcontroller is designed for a very specific task – to control a particular system. As a result, the parts can be simplified and reduced, which cuts down on production costs. (Webopedia [2]) A {microprocessor} on a single {integrated circuit} intended to ope- rate as an {embedded} system. As well as a {CPU}, a microcontroller typically includes small amounts of {RAM} and {PROM} and timers and I/O ports. .(Define That [3]) A single chip that contains the processor (the CPU), non-volatile memory for the program (ROM or flash), volatile memory for input and output (RAM), a clock and an I/O control unit. -
The Manchester University "Baby" Computer and Its Derivatives, 1948 – 1951”
Expert Report on Proposed Milestone “The Manchester University "Baby" Computer and its Derivatives, 1948 – 1951” Thomas Haigh. University of Wisconsin—Milwaukee & Siegen University March 10, 2021 Version of citation being responded to: The Manchester University "Baby" Computer and its Derivatives, 1948 - 1951 At this site on 21 June 1948 the “Baby” became the first computer to execute a program stored in addressable read-write electronic memory. “Baby” validated the widely used Williams- Kilburn Tube random-access memories and led to the 1949 Manchester Mark I which pioneered index registers. In February 1951, Ferranti Ltd's commercial Mark I became the first electronic computer marketed as a standard product ever delivered to a customer. 1: Evaluation of Citation The final wording is the result of several rounds of back and forth exchange of proposed drafts with the proposers, mediated by Brian Berg. During this process the citation text became, from my viewpoint at least, far more precise and historically reliable. The current version identifies several distinct contributions made by three related machines: the 1948 “Baby” (known officially as the Small Scale Experimental Machine or SSEM), a minimal prototype computer which ran test programs to prove the viability of the Manchester Mark 1, a full‐scale computer completed in 1949 that was fully designed and approved only after the success of the “Baby” and in turn served as a prototype of the Ferranti Mark 1, a commercial refinement of the Manchester Mark 1 of which I believe 9 copies were sold. The 1951 date refers to the delivery of the first of these, to Manchester University as a replacement for its home‐built Mark 1. -
1. Types of Computers Contents
1. Types of Computers Contents 1 Classes of computers 1 1.1 Classes by size ............................................. 1 1.1.1 Microcomputers (personal computers) ............................ 1 1.1.2 Minicomputers (midrange computers) ............................ 1 1.1.3 Mainframe computers ..................................... 1 1.1.4 Supercomputers ........................................ 1 1.2 Classes by function .......................................... 2 1.2.1 Servers ............................................ 2 1.2.2 Workstations ......................................... 2 1.2.3 Information appliances .................................... 2 1.2.4 Embedded computers ..................................... 2 1.3 See also ................................................ 2 1.4 References .............................................. 2 1.5 External links ............................................. 2 2 List of computer size categories 3 2.1 Supercomputers ............................................ 3 2.2 Mainframe computers ........................................ 3 2.3 Minicomputers ............................................ 3 2.4 Microcomputers ........................................... 3 2.5 Mobile computers ........................................... 3 2.6 Others ................................................. 4 2.7 Distinctive marks ........................................... 4 2.8 Categories ............................................... 4 2.9 See also ................................................ 4 2.10 References -
CLUE Rock, Paper, Scissors Game Using Bluetooth Created by Kevin Walters
CLUE Rock, Paper, Scissors Game using Bluetooth Created by Kevin Walters Last updated on 2021-07-28 03:42:04 PM EDT Guide Contents Guide Contents 2 Overview 4 Parts 4 CLUE 4 Circuit Playground Bluefruit with TFT Gizmo 5 Design 6 Rules 6 More than Two Players 6 Flow Diagram 7 User Interface 8 User Interface 8 Choice selection 8 Display on NeoPixels 9 Screens 9 Screen Transitions 10 Sprites 10 TFT Gizmo Detection 12 The Challenge of Detecting the TFT Gizmo 12 Exchanging Choices 14 Cheating 14 Simultaneous Exchange of Player Choices 15 First Idea 15 Third Idea 16 Fourth Idea 16 Fifth Idea 17 Identity and Authentication 18 Networking 19 Connection-oriented and Connection-less Communication 19 Custom Advertisement Packets using ManufacturerData 20 Simple Game 21 Advanced Game 22 Making the List of Players 22 Exchanging Data between Players 23 Scores 26 Multi-player Scoring 26 Score Table Presentation 26 CircuitPython on CLUE 27 Set up CircuitPython Quick Start! 27 CircuitPython on Circuit Playground Bluefruit 29 Install or Update CircuitPython 29 CircuitPython 31 Libraries 31 Libraries for Very Simple Game 31 Libraries for Simple Game 31 Libraries for Advanced Game for CLUE 31 Libraries for Advanced Game for Circuit Playground Bluefruit with TFT Gizmo 32 Libraries for Advanced Game for Circuit Playground Bluefruit only 32 Development Testing 33 Very Simple Game 34 Installation 34 Code 35 Code Discussion 36 Evolving the Game and some History 36 Simple Game 38 © Adafruit Industries https://learn.adafruit.com/rock-paper-scissors-circuitpython -
Oyo-Buturi International
Oyo-Buturi International Interview few books on to the subject. One was Den- work? shi-Keisanki (obi: “Electronic Computer”) Dr Shima: I did it for about four months. Dr Masatoshi Shima was part of a talent- by Shigeru Takahashi, which outlined the The next development in my career oc- ed group of engineers who in 1971 de- system, architecture, instruction set and curred as a result of my being lucky or as we veloped the world’s first microprocessor, microprogramming of computers; almost say in Japanese unmei (obi: fate or destiny). the 4004. In this interview, Dr Shima everything concerning computers. Another OBI: What do you mean by that? sheds light on some of the critical events book I read was about logic. It was written Dr Shima: Well, although the transistor leading up to the development of the by Professor Udagawa. I read both of these was invented in 1947, it was not commer- technology that revolutionised the elec- books avidly and then began to design the cialised until 1951. The commercial use of tronics industry and society as a whole. circuit boards that go into a calculator. This the transistor then led to a new era, namely, process involves connecting ics with wires the “era of the circuit”. That is to say, if you OBI: You studied chemistry as an under- and designing complicated wiring patterns. could fabricate a circuit by putting together graduate but then joined a com- a transistor, a resistor and a di- pany working on calculating ma- ode, you could construct and de- chines. -
Mikroelektronika | Free Online Book | PIC Microcontrollers | Introduction: World of Microcontrollers
mikroElektronika | Free Online Book | PIC Microcontrollers | Introduction: World of Microcontrollers ● TOC ● Introduction ● Ch. 1 ● Ch. 2 ● Ch. 3 ● Ch. 4 ● Ch. 5 ● Ch. 6 ● Ch. 7 ● Ch. 8 ● Ch. 9 ● App. A ● App. B ● App. C Introduction: World of microcontrollers The situation we find ourselves today in the field of microcontrollers had its beginnings in the development of technology of integrated circuits. This development has enabled us to store hundreds of thousands of transistors into one chip. That was a precondition for the manufacture of microprocessors. The first computers were made by adding external peripherals such as memory, input/output lines, timers and others to it. Further increasing of package density resulted in creating an integrated circuit which contained both processor and peripherals. That is how the first chip containing a microcomputer later known as a microcontroller has developed. This is how it all got started... In the year 1969, a team of Japanese engineers from BUSICOM came to the USA with a request that a few integrated circuits for calculators were to be designed according to their projects. The request was sent to INTEL and Marcian Hoff was in charge of the project there. Having experience working with a computer, the PDP8, he came up with an idea to suggest fundamentally different solutions instead of the suggested design. This solution presumed that the operation of integrated circuit was to be determined by the program stored in the circuit itself. It meant that configuration would be simpler, but it would require far more memory than the project proposed by Japanese engineers. -