Electronic Inventions and Discoveries
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The Law on Optical Discs
THE LAW ON OPTICAL DISCS I. GENERAL PROVISIONS Subject-matter of the Law Article 1 This Law shall regulate the manufacturing, commercial duplication, circulation and exports of optical discs, and imports and exports of production parts, raw materials and equipment used for manufacturing of optical discs. Definitions Article 2 The terms used in this Law, shall have the following meaning: 1) Optical Disc shall mean any medium or device, other than a production part, on which data in digital form, readable by means of an optical scanning mechanism employing a high-density light source (a laser), has been stored or is capable of being stored, including all the formats, notably: - CD (compact disc) - CD-DA (compact disc digital audio) - CD-I (compact disc – interactive) - CD-P (compact disc – photo) - CD-ROM (compact disc read-only memory) - CD-R (compact disc recordable) - CD-RW (compact disc rewritable) - CD-WO (compact disc write once) - DVD (digital versatile disc) - DVD-RAM (digital versatile disc random access memory) - DVD-ROM (digital versatile disc read-only memory) - LD (laserdisc) - MD (mini-disc) - VCD (video compact disc) - CVD (China video disc) - SVCD (super video compact disc) - SACD (Super audio compact disc) 2) Production Part shall mean any component of a mould (a “stamper”), that embodies data in a digital form and is capable of being used to mould optical discs, or any other device embodying data from which a stamper may be produced by means of an electroplating process; 3) Master disc shall mean a disc made of glass or polymer that contains data in digital form used to produce Production Part (a “stamper”);. -
The History of the Telephone
STUDENT VERSION THE HISTORY OF THE TELEPHONE Activity Items There are no separate items for this activity. Student Learning Objectives • I will be able to name who invented the telephone and say why that invention is important. • I will be able to explain how phones have changed over time. THE HISTORY OF THE TELEPHONE STUDENT VERSION NAME: DATE: The telephone is one of the most important inventions. It lets people talk to each other at the same time across long distances, changing the way we communicate today. Alexander Graham Bell, the inventor of the telephone CENSUS.GOV/SCHOOLS HISTORY | PAGE 1 THE HISTORY OF THE TELEPHONE STUDENT VERSION 1. Like many inventions, the telephone was likely thought of many years before it was invented, and by many people. But it wasn’t until 1876 when a man named Alexander Graham Bell, pictured on the previous page, patented the telephone and was allowed to start selling it. Can you guess what “patented” means? CENSUS.GOV/SCHOOLS HISTORY | PAGE 2 THE HISTORY OF THE TELEPHONE STUDENT VERSION 2. The picture below, from over 100 years ago, shows Alexander Graham Bell using one of his first telephones to make a call from New York to Chicago. Alexander Graham Bell making a telephone call from New York to Chicago in 1892 Why do you think it was important that someone in New York could use the telephone to talk to someone in Chicago? CENSUS.GOV/SCHOOLS HISTORY | PAGE 3 THE HISTORY OF THE TELEPHONE STUDENT VERSION 3. Today, millions of people make phone calls each day, and many people have a cellphone. -
EE 122: Networks & Protocols Welcome Our New TA
EE 122: Networks & Protocols Ion Stoica (and Brighten Godfrey) TAs: Lucian Popa, David Zats and Ganesh Ananthanarayanan http://inst.eecs.berkeley.edu/~ee122/ (Materials with thanks to Vern Paxson, Jennifer Rexford, and colleagues at UC Berkeley) 1 Welcome our New TA Ganesh Ananthanarayanan E-mail: [email protected] Office hours: WF 11-12; location: TBA Discussion section: TBA 2 1 Goals for Today’s Class Type of Networks And the key concept of multiplexing What’s a Protocol ? 3 What Global (non-digital) Communication Network Do You Use Every Day? Roughly speaking, how does it work? 4 2 What’s Another Such Network That You Use Every Day? 5 Taxonomy of Communication Networks Communication networks can be classified based on the way in which the nodes exchange information: Communication Network 6 3 Taxonomy of Communication Networks Communication networks can be classified based on the way in which the nodes exchange information: Communication Network Broadcast Communication Network 7 Broadcast Communication Networks Information transmitted by any node is received by every other node in the network Examples? Usually in LANs ( Local Area Networks) E.g., Ethernet (classical), WiFi E.g., lecture! What problems does this raise? Problem #1: limited range Problem #2: privacy of communication Problem #3: coordinating access to the shared communication medium ( Multiple Access Problem ) 8 4 Taxonomy of Communication Networks Communication networks can be classified based on the way in which the nodes exchange information: -
Lecture 27 Semiconductor Memory: DRAM and Non-Volatile Memory Administrivia
Lecture 27 Semiconductor Memory: DRAM and Non-Volatile Memory Digital Integrated Circuits Interconnect © Prentice Hall 2000 Administrivia l Today: Project phase 3 announcement. l Poster Session Tu 5/8 1-4pm » Location BWRC, 2108 Allston Way l Last lecture on Th 5/3 will cover issues in IC design Digital Integrated Circuits Interconnect © Prentice Hall 2000 1 Lectures Last l ROM and SRAM Today l Introducing the project phase III l DRAM and Non-volatile Digital Integrated Circuits Interconnect © Prentice Hall 2000 Project Phase III A proposed SRAM cell! w/ Control Circuit Digital Integrated Circuits Interconnect © Prentice Hall 2000 2 Tasks l Explain the behavior of the cell in its global contents. Provide transient simulations to illustrate. l Identify weakness of the cell in terms of signal integrity and power dissipation. Quantify your statements. l Propose an implementation that improves power dissipation. Digital Integrated Circuits Interconnect © Prentice Hall 2000 Report l Report » Comparison, Selection, Electrical Design » Cell Layout, Timing Waveforms in SRAM, Simulation » Power and Estimation and Proposal for SRAM power reduction l 3 slides on poster, each of which represents one of the tasks of the previous slide » Explanation of cell operation, comparison, design » Cell Operation in SRAM, Waveforms, Simulation » Proposal of improved SRAM implementation (from a power perspective) Digital Integrated Circuits Interconnect © Prentice Hall 2000 3 SEMICONDUCTOR MEMORIES Digital Integrated Circuits Interconnect © Prentice Hall 2000 3-Transistor DRAM Cell BL1 BL2 WWL WWL RWL RWL X X M3 VDD-VT M2 M1 VDD BL1 CS BL2 VDD-VT DV No constraints on device ratios Reads are non-destructive Value stored at node X when writing a “1” = VWWL-VTn Digital Integrated Circuits Interconnect © Prentice Hall 2000 4 3T-DRAM — Layout BL2 BL1 GND RWL M3 M2 WWL M1 Digital Integrated Circuits Interconnect © Prentice Hall 2000 1-Transistor DRAM Cell BL WL Write "1" Read "1" WL 1 M C X S GND VDD-VT V BL DD VDD/2 VDD/2 CBL sensing Write: CS is charged or discharged by asserting WL and BL. -
Nanotechnology Trends in Nonvolatile Memory Devices
IBM Research Nanotechnology Trends in Nonvolatile Memory Devices Gian-Luca Bona [email protected] IBM Research, Almaden Research Center © 2008 IBM Corporation IBM Research The Elusive Universal Memory © 2008 IBM Corporation IBM Research Incumbent Semiconductor Memories SRAM Cost NOR FLASH DRAM NAND FLASH Attributes for universal memories: –Highest performance –Lowest active and standby power –Unlimited Read/Write endurance –Non-Volatility –Compatible to existing technologies –Continuously scalable –Lowest cost per bit Performance © 2008 IBM Corporation IBM Research Incumbent Semiconductor Memories SRAM Cost NOR FLASH DRAM NAND FLASH m+1 SLm SLm-1 WLn-1 WLn WLn+1 A new class of universal storage device : – a fast solid-state, nonvolatile RAM – enables compact, robust storage systems with solid state reliability and significantly improved cost- performance Performance © 2008 IBM Corporation IBM Research Non-volatile, universal semiconductor memory SL m+1 SL m SL m-1 WL n-1 WL n WL n+1 Everyone is looking for a dense (cheap) crosspoint memory. It is relatively easy to identify materials that show bistable hysteretic behavior (easily distinguishable, stable on/off states). IBM © 2006 IBM Corporation IBM Research The Memory Landscape © 2008 IBM Corporation IBM Research IBM Research Histogram of Memory Papers Papers presented at Symposium on VLSI Technology and IEDM; Ref.: G. Burr et al., IBM Journal of R&D, Vol.52, No.4/5, July 2008 © 2008 IBM Corporation IBM Research IBM Research Emerging Memory Technologies Memory technology remains an -
Plated Wire Memory Usage on the UNIVAC Minuteman Weapon System Computer ©2008 by Larry D
P.O. Box 131748 Roseville, MN 55113 Plated Wire Memory Usage on the UNIVAC Minuteman Weapon System Computer ©2008 by Larry D. Bolton, Clinton D. Crosby, and James A. Howe Larry Bolton was a component engineer assigned to the Minuteman program from 1969 to 1975. In support of the Minuteman program, we purchased a plated wire element and a raw tunnel structure. These were used by UNIVAC St. Paul to build the plated wire memory assembly. Larry Bolton’s function on the Minuteman program was to monitor suppliers to ensure that the program received plated wire and tunnel structure materials that met the specification requirements. Clint Crosby was an Applied Research engineer assigned to the Minuteman program and was part of a plated wire element analysis group from 1969 to 1980. Clint was involved with plated wire testing, plated wire manufacturing support at Bristol, and Minuteman memory module fabrication support at St. Paul. Jim Howe was the lead engineer for the three generations of plated wire memories for the Minuteman WSC computer (the EDM, ADM, and production versions), and was the lead engineer for a company-sponsored wide-margin plated wire memory design that was done as a backup to the three Minuteman memories. Unfortunately, even though it was a great success, it wasn't needed (customer political implications). PLATED WIRE PROGRAM UNIVAC Commercial in Philadelphia, PA, had developed a continuous chemical plating process to put a Ni- Fe magnetic plating over a 5 mil beryllium-copper substrate wire. Manufacturing was located at Univac Commercial in Bristol, Tennessee. The finished product was used in the 9000 series and initial 1110 commercial computers as well as on the Minuteman program. -
31 January 1971 J. Jurison Program Manager Distribution of This Report
31 January 1971 J. Jurison Program Manager Distribution of this report is provided in the interest of information exchange and should not be construed as an endorsement by NASA of the material presented. Prepared Under Contract for c70-171 /301 FOR E W OR%) This final report covers the work performed by Autonetics Division of North American Rockwell Coyporation under a study contract entitled Reconfigurable GSrC computer Study for Space Station Use. The report is submitted to the National Aeronautice and Space Administration Manned Spacecraft Center under the requirements of Contract N The study program covered the period from December 29, 1969 through January 31, 1971. The NASA. Technical Monitor was Mr. E. S. Chevers. The final report consists of seven (7) volumes: Volume I Technical Summary Volume II Final Technical Report Volume IU Appendix I. Model- Specification Volume TV Appendix 2. IOP - VCS Detailed Design Volume V Appendix 3. System Analysis and Trade-offs Volume VI Appendix 4. Software and Simulation Description and Results Volume VI1 Appendix 5. D-200 Computer Family Appendix 6. System Error Analysis Appendix 7. Reliability Derivation for Candidate Computers Appendix 8. Power Converter Design Data Appendix 9. Data Transmission Medium Design PPENDIX 5 1. 208 Building Blocks . e . e e a a . e e e . e e , . a e 5-1 Page- 1.0 Introduction and Summary e , , . ., . e e e e e , e . a 6-1 2.0 Error Analysis and Mechanization Equa*'blons e. * e *. , , . *.. 6-3 3.0 Computer Program e.. -... a *. a a . e. 6-8 4.0 Results a e.I). -
Magnetic Recording and Readout Memory
SNS college of Technology Coimbatore-641 035 MAGNETIC RECORDING AND READOUT MEMORY Nowadays, large number of information are stored in (or) retrieved from the storage devices, by using devices is magnetic recording heads and they function according to the principle of magnetic induction. Generally Ferro or Ferrimagnetic materials are used in the storage devices because in this type of materials only the magnetic interaction between only two dipoles align themselves parallel to each other. Due to this parallel alignment even if we apply small amount of magnetic field, a large value of magnetization is produced. By using this property information are stored in storage devices. In the storage devices, the recording of digital data (0‟s and 1‟s) depends upon the direction of magnetization in the medium. Magnetic parameters for Recording 1. When current is passed through a coil, a magnetic field is induced. This principle called “Electromagnetic Induction” is used in storage devices. 2. The case with which the material can be magnetized is another parameter. 3. We know the soft magnetic materials are the materials which can easily be magnetized and demagnetized. Hence a data can be stored and erased easily. Such magnetic materials are used in temporary storage devices. 4. Similarly, we know hard magnetic materials cannot be easily magnetized and demagnetized. So such magnetic materials are used in permanent storage devices. 5. In soft magnetic materials, the electrical resistance varies with respect to the magnetization and this effect is called magneto-resistance. This parameter is used in specific thin film systems. 19PYB102 & PHYSICS OF MATERIALS AND PHOTONICS D.SENGOTTAIYAN /AP/PHYSICS Page 1 SNS college of Technology Coimbatore-641 035 The magnetic medium is made of magnetic materials (Ferro or Ferric oxide) deposited on this plastic. -
3D-Graphics Module • H.264(AVC)Decoder • Reconfigurable Processor • Embedded DRAM • Chip Implementation • Conclusion Sony Corporation Sony LSI Design Inc
A 90nm embedded DRAM single chip LSI with a 3D graphics, H.264 codec engine, and a reconfigurable processor Authors Yoshikazu Kurose Ichiro Kumata Masanobu Okabe Hirokazu Hanaki Katsunori Seno Kouichi Hasegawa Hiroyuki Ozawa Seiichiro Horiike Toru Wada Shunkaku Arima Kazuo Taniguchi Kazuya Ono* Hiromi Hokazono Toshiyuki Hiroi** Tetsuya Hirano Shinji Takashima* * Sony Corporation * Sony LSI Design Inc. * * Sony Computer Entertainment Inc. outline • What is PlayStation® Portable (PSPTM) • PSPTM system chip block diagram • 3D-graphics module • H.264(AVC)Decoder • Reconfigurable processor • Embedded DRAM • Chip implementation • Conclusion Sony Corporation Sony LSI Design Inc. Sony Computer Entertainment Inc. 1 What is PlayStation® Portable (PSPTM) New Handheld Video Game System TM UMDTM PSP TFT LCD controller System Chip 480x272 dots UMDTM Memory StickTM / USB n 3D-CG Games with High Quality Video/ Sound n 4.3 inch, Wide Screen(16:9) TFT LCD n UMDTM, High-Capacity (1.8GB) Optical Disc n ATRAC3 plus, AAC, MP3 for Music n AVC/ @MP for Picture/ Movie n Li-ion Battery Sony Corporation Sony LSI Design Inc. Sony Computer Entertainment Inc. PSPTM System Chip Block Diagram I/O VRAM I/O Security Ext. GPU DMAC I/O System Timer Bus DDR-IF Data Inst. Data Inst. Cache Cache VFPU Virtual Cache Cache AVC Mobile Main CPU Engine Media eDRAM Core Engine FPU Memory Game processing unit Media processing unit Sony Corporation Sony LSI Design Inc. Sony Computer Entertainment Inc. 2 Game/ Media processing unit n Game processing unit n CPU Core n MI PS R4000 32bit Core:1-333MHz n FPU, VFPU (Vector Unit) n 3D graphics n ‘Rendering Engine’ + ‘Surface Engine’ n 2MByte eDRAM(VRAM):512bit/ 166MHz bus I / F n Media processing unit n Media Engine n MI PS R4000 32bit Core with FPU n 1-333MHz n H.264 codec engine n H.264 hardware accelerator n VME(Virtual Mobile Engine) n A reconfigurable processor to decode audio/ video codec Sony Corporation Sony LSI Design Inc. -
Introduction to Computere
Usmani Ghani Private High School INTRODUCTION TO COMPUTERE For School students GRADE ( 9 ) Ketabton.com Prepared BY : Toryali {Danish} Email : [email protected] (c) ketabton.com: The Digital Library INTRODUCTION TO COMPUTER TABLE OF CONTENTS What is a computer? .............................................................................................................................................. 4 computers parts: ................................................................................................................................................... 5 Hardware: ............................................................................................................................................................. 5 Software: ............................................................................................................................................................... 5 System software: ................................................................................................................................................... 6 Application Software: ............................................................................................................................................ 6 System: ................................................................................................................................................................... 7 Classification of computer: ................................................................................................................................... -
Magnetic Storage- Magnetic-Core Memory, Magnetic Tape,RAM
Magnetic storage- From magnetic tape to HDD Juhász Levente 2016.02.24 Table of contents 1. Introduction 2. Magnetic tape 3. Magnetic-core memory 4. Bubble memory 5. Hard disk drive 6. Applications, future prospects 7. References 1. Magnetic storage - introduction Magnetic storage: Recording & storage of data on a magnetised medium A form of „non-volatile” memory Data accessed using read/write heads Widely used for computer data storage, audio and video applications, magnetic stripe cards etc. 1. Magnetic storage - introduction 2. Magnetic tape 1928 Germany: Magnetic tape for audio recording by Fritz Pfleumer • Fe2O3 coating on paper stripes, further developed by AEG & BASF 1951: UNIVAC- first use of magnetic tape for data storage • 12,7 mm Ni-plated brass-phosphorus alloy tape • 128 characters /inch data density • 7000 ch. /s writing speed 2. Magnetic tape 2. Magnetic tape 1950s: IBM : patented magnetic tape technology • 12,7 mm wide magnetic tape on a 26,7 cm reel • 370-730 m long tapes 1980: 1100 m PET –based tape • 18 cm reel for developers • 7, 9 stripe tapes (8 bit + parity) • Capacity up to 140 MB DEC –tapes for personal use 2. Magnetic tape 2014: Sony & IBM recorded 148 Gbit /squareinch tape capacity 185 TB! 2. Magnetic tape Remanent structural change in a magnetic medium Analog or digital recording (binary storage) Longitudinal or perpendicular recording Ni-Fe –alloy core in tape head 2. Magnetic tape Hysteresis in magnetic recording 40-150 kHz bias signal applied to the tape to remove its „magnetic history” and „stir” the magnetization Each recorded signal will encounter the same magnetic condition Current in tape head proportional to the signal to be recorded 2. -
The History of the Telephone
THE HISTORY OF THE TELEPHONE BY HERBERT N. CASSON First edition A. C. McClurg & Co. Chicago Published: 1910 PREFACE Thirty-five short years, and presto! the newborn art of telephony is fullgrown. Three million telephones are now scattered abroad in foreign countries, and seven millions are massed here, in the land of its birth. So entirely has the telephone outgrown the ridicule with which, as many people can well remember, it was first received, that it is now in most places taken for granted, as though it were a part of the natural phenomena of this planet. It has so marvelously extended the facilities of conversation--that "art in which a man has all mankind for competitors"--that it is now an indispensable help to whoever would live the convenient life. The disadvantage of being deaf and dumb to all absent persons, which was universal in pre-telephonic days, has now happily been overcome; and I hope that this story of how and by whom it was done will be a welcome addition to American libraries. It is such a story as the telephone itself might tell, if it could speak with a voice of its own. It is not technical. It is not statistical. It is not exhaustive. It is so brief, in fact, that a second volume could readily be made by describing the careers of telephone leaders whose names I find have been omitted unintentionally from this book--such indispensable men, for instance, as William R. Driver, who has signed more telephone cheques and larger ones than any other man; Geo.