Practical-Computing
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ACPI (Ang. Advanced Configuration and Power Interface, Zaawansowany Interfejs Zarządzania Konfiguracją I Energią) – Otwarty
ACPI (ang. Advanced Configuration and Power Interface, zaawansowany interfejs zarządzania konfiguracją i energią) – otwarty standard opracowany przez firmy Intel, Microsoft i Toshiba, do których później dołączyły HP oraz Phoenix, po raz pierwszy ogłoszony w grudniu 1996. ACPI zwiększa możliwości systemów zarządzania energią oferowane przez wcześniejsze rozwiązanie APM. Umożliwia systemowi operacyjnemu kontrolowanie ilości energii dostarczanej do poszczególnych urządzeń komputera (napędu CD-ROM, twardego dysku oraz urządzeń peryferyjnych) i, podobnie jak APM, umożliwia ich wyłączanie, gdy nie są używane a konieczne jest oszczędzanie energii. ADC - Przetwornik analogowo-cyfrowy A/C (ang. A/D – analog to digital; ADC – analog to digital converter), to układ służący do zamiany sygnału analogowego (ciągłego) na reprezentację cyfrową (sygnał cyfrowy). Dzięki temu możliwe jest przetwarzanie ich w urządzeniach elektronicznych opartych o architekturę zero-jedynkową oraz gromadzenie na dostosowanych do tej architektury nośnikach danych. Proces ten polega na uproszczeniu sygnału analogowego do postaci skwantowanej (dyskretnej), czyli zastąpieniu wartości zmieniających się płynnie do wartości zmieniających się skokowo w odpowiedniej skali (dokładności) odwzorowania. Przetwarzanie A/C tworzą 3 etapy: próbkowanie, kwantyzacja i kodowanie. Działanie przeciwne do wyżej wymienionego wykonuje przetwornik cyfrowo-analogowy C/A. AGP - Accelerated Graphics Port (AGP, czasem nazywany Advanced Graphics Port) – zmodyfikowana magistrala PCI opracowanej przez firmę Intel zaprojektowana do obsługi kart graficznych. Jest to 32- bitowa magistrala PCI zoptymalizowana do szybkiego przesyłania dużych ilości danych pomiędzy pamięcią operacyjną a kartą graficzną. Wyparta przez szybszą magistralę PCI Express. AGP Pro - specjalna wersja gniazda rozszerzeń AGP przeznaczona do profesjonalnych kart graficznych, które zużywają dużo prądu. Gniazdo AGP Pro ma 48 pinów więcej niż standardowe gniazdo AGP. Służą one niemal wyłącznie jako dodatkowe linie zasilania. -
Adding a 5 Pin DIN to an Amstrad CPC 464
arduitape.blogspot.com Adding a 5 pin DIN to an Amstrad CPC 464 Share 4-5 minutes Adding a 5 pin DIN to an Amstrad CPC 464 After mentioning that I had gotten a CPC and attached a DIN to it so that I could connect it to the TZXDuino I have had a few requests on how to do it so I thought I'd try a guide. You will need to purchase 180 degree 5 pin female din that is chassis mountable. This is the type that I purchased except mine also had a mounting plate too. The standard 6128 cassette connector is wired like this. Each pin is numbered on the back so that you know which one you are connecting it too so don't worry if the pins are in different positions as it depends on whether you are looking from the connection side or the soldering side. I would use different coloured wiring for each type of connection. I used the following Ground - Black Data Input - White Data Output - Pink Remote Control - Brown At this point I added 4 male pins to the end of my wiring so that I could build a connector so that I could easily disconnect the DIN should I need to work on the cassette drive. Next is connecting the wiring to the cassette drive Make sure that when you solder you do not create any shorts and connect the wiring as follows. Close Up your computer and then test to make sure that it all works. If you want to use the built in cassette recorder you just unplug the cassette leads from the DIN and use it as normal. -
INSIGHT CASE STUDY Insight Confidential
INSIGHT CASE STUDY Insight Confidential Since 1988, Insight has evolved from a technology start-up to a global IT player; from a private, home-based business to a publicly traded Fortune 500 corporation. In addition, Insight has grown through a number of acquisitions, bringing dynamic new cultures into the Insight fold. How do we drive cohesion and strengthen our One Team to perform more consistently, capture market share and increase our share of every dollar we sell? Over the years, Insight has undergone an aggressive evolution of its strategy as the company grew from its roots as a low-cost, high availability product provider to offering a value proposition few of its competitors could claim: A global information technology provider of hardware, software and service solutions to business and government clients. When asked about the evolution of the business, Insight co-founder Tim Crown said, “My brother Eric and I have always described the business as a series of strategic decisions. These led us from being a hard drive only company advertising in magazines on an inbound basis, to a multi-product cataloger, to a business to business product reseller with outbound sales, to an IT service provider.” Around the same time Insight was founded, a number of competitors were also established and in much the same way. Through the years, these competitors have also evolved their strategies and focus areas to remain successful in a highly dynamic and competitive IT environment. These efforts have had varying degrees of success. In 2011, the Insight senior leadership team knew the business had the right value proposition to grow to a new level of achievement. -
65C102 Co-Processor User Guide
Within this publication the term 'BBC' is used as an abbreviation for. British Broadcasting Corporation'. © Copyright ACORN Computers Limited 1985 Neither the whole or any part of the information contained in, or the product described in, this manual may be adapted or reproduced in any material form except with the prior written approval of ACORN Computers Limited (ACORN Computers). The product described in this manual and products for use with it, are subject to continuous development and improvement. All information of a technical nature and particulars of the product and its use ( including the information and particulars in this manual) are given by ACORN Computers in good faith. However, it is acknowledged that there may be errors or omissions in this manual. A list of details of any amendments or revisions to this manual can be obtained upon request from ACORN Computers Technical Enquiries. ACORN Computers welcome comments and suggestions relating to the product and this manual. All correspondence should be addressed to:- Technical Enquiries ACORN Computers Limited Newmarket Road Cambridge CB5 8PD All maintenance and service on the product must be carried out by ACORN Computers' authorised dealers. ACORN Computers can accept no liability whatsoever for any loss or damage caused by service or maintenance by unauthorised personnel. This manual is intended only to assist the reader in the use of this product, and therefore ACORN Computers shall not be liable for any loss or damage whatsoever arising from the use of any information or particulars in, or any error or omission in, this manual, or any incorrect use of the product. -
Retro Magazine World 0
Més que un Magazine TABLE OF CONTENTS ◊ The Karnak MFP810 Calculator Pag. 3 "Més que un club" (more than a club) is the slogan proudly ◊ SEGA SATURN - a fantastic but Pag. 4 displayed by Barcelona FC in the stands of its football stadium. misunderstood platform! With equal pride we can say that RetroMagazine World is more ◊ Commodore 264 Series Pag. 6 than just a magazine reserved for a group of enthusiasts. ◊ OLIVETTI, when Italy was Silicon Valley Pag. 10 ◊ Olivetti PC128S Pag. 15 With all our initiatives (the site, "Press Play Again", etc.) and the ◊ RetroLiPS project presence on the most frequented social networks, it proves to be Pag. 19 a community full of life. ◊ Nobility of a humble flowchart Pag. 20 ◊ Introduction to Commodore C128 Pag. 26 The Editorial Board has recently seen an increase in the number graphics - part 2 of collaborators, starting with Mike "The biker" Novarina, ◊ Turbo Rascal SE - A complete cross- Pag. 30 Alessandro Albano and continuing with Francesco Coppola, platform framework for 8/16-bit Beppe Rinella, Christian Miglio (humbly apologizing if we have development forgotten someone else worthy of being remembered). ◊ ATARI - The origin of the myth Pag. 34 In particular, the young Francesco Coppola will take care of the ◊ Another World: a scary and magnificent Pag. 36 journey Atari world, while Beppe Rinella will enrich the articles of games by leaving the patterns of the usual review. ◊ Road Hunter - TI99/4A Pag. 40 ◊ Wizard of Wor - Commodore 64 Pag. 42 RetroMagazine World is appreciated because it is made by ◊ F-1 Spirit: the way to Formula-1 (MSX) Pag. -
Trademarks, Triggers and Online Search Working Paper
Trademarks, Triggers and Online Search Working paper Stefan Bechtold∗ and Catherine Tuckery May 18, 2013 Abstract Internet search engines display advertisements along with search results, providing them with a major source of revenue. The display of ads is triggered by the use of keywords, which are found in the searches performed by search engine users. The fact that advertisers can buy a keyword that contains a trademark they do not own has caused controversy worldwide. To explore the actual effects of trademark and keyword advertising policies, we exploit a natural experiment in Europe. Following a decision by the Court of Justice of the European Union, Google relaxed its AdWords policy in continental Europe in September 2010. After the policy change, Google allowed advertisers to select a third party's trademark as a keyword to trigger the display of ads. We use click-stream data from European Internet users to explore the impact this policy change had on browsing behavior. Based on a data set of 5.38 million web site visits before and after the policy change, we find little average change. However, we present evidence that this lack of average effect stems from an aggregation of two opposing effects. While navigational searches are less likely to lead to the trademark owner's website, non-navigational searches are more likely to lead to the trademark owner's website after the policy change. The effect of changing keyword advertising policies varies with the purpose of the consumers using the trademark. It is the resulting tradeoffs, rather than consumer confusion, on which the keyword advertising debate should focus. -
Wikipedia: Design of the FAT File System
Design of the FAT file system A FAT file system is a specific type of computer file system architecture and FAT a family of industry-standard file systems utilizing it. Developer(s) Microsoft, SCP, IBM, [3] The FAT file system is a legacy file system which is simple and robust. It Compaq, Digital offers good performance even in very light-weight implementations, but Research, Novell, cannot deliver the same performance, reliability and scalability as some Caldera modern file systems. It is, however, supported for compatibility reasons by Full name File Allocation Table: nearly all currently developed operating systems for personal computers and FAT12 (12- many home computers, mobile devices and embedded systems, and thus is a bit version), well suited format for data exchange between computers and devices of almost FAT16 (16- any type and age from 1981 through the present. bit versions), Originally designed in 1977 for use on floppy disks, FAT was soon adapted and FAT32 (32-bit version used almost universally on hard disks throughout the DOS and Windows 9x with 28 bits used), eras for two decades. Today, FAT file systems are still commonly found on exFAT (64- floppy disks, USB sticks, flash and other solid-state memory cards and bit versions) modules, and many portable and embedded devices. DCF implements FAT as Introduced 1977 (Standalone the standard file system for digital cameras since 1998.[4] FAT is also utilized Disk BASIC-80) for the EFI system partition (partition type 0xEF) in the boot stage of EFI- FAT12: August 1980 compliant computers. (SCP QDOS) FAT16: August 1984 For floppy disks, FAT has been standardized as ECMA-107[5] and (IBM PC DOS 3.0) ISO/IEC 9293:1994[6] (superseding ISO 9293:1987[7]). -
Computer Architectures an Overview
Computer Architectures An Overview PDF generated using the open source mwlib toolkit. See http://code.pediapress.com/ for more information. PDF generated at: Sat, 25 Feb 2012 22:35:32 UTC Contents Articles Microarchitecture 1 x86 7 PowerPC 23 IBM POWER 33 MIPS architecture 39 SPARC 57 ARM architecture 65 DEC Alpha 80 AlphaStation 92 AlphaServer 95 Very long instruction word 103 Instruction-level parallelism 107 Explicitly parallel instruction computing 108 References Article Sources and Contributors 111 Image Sources, Licenses and Contributors 113 Article Licenses License 114 Microarchitecture 1 Microarchitecture In computer engineering, microarchitecture (sometimes abbreviated to µarch or uarch), also called computer organization, is the way a given instruction set architecture (ISA) is implemented on a processor. A given ISA may be implemented with different microarchitectures.[1] Implementations might vary due to different goals of a given design or due to shifts in technology.[2] Computer architecture is the combination of microarchitecture and instruction set design. Relation to instruction set architecture The ISA is roughly the same as the programming model of a processor as seen by an assembly language programmer or compiler writer. The ISA includes the execution model, processor registers, address and data formats among other things. The Intel Core microarchitecture microarchitecture includes the constituent parts of the processor and how these interconnect and interoperate to implement the ISA. The microarchitecture of a machine is usually represented as (more or less detailed) diagrams that describe the interconnections of the various microarchitectural elements of the machine, which may be everything from single gates and registers, to complete arithmetic logic units (ALU)s and even larger elements. -
Acorn User Welcomes Submissions Irom Readers
ACORN BBC MICRO- ELECTRON- ATOM DECEMBER 1984 £1 TOP SCORE We pick the 20 best games of '84 ORGAN PROJECT Build your own keyboard DATABASES File on six packages LIGHTPENS Which one shines? Program entry at a stroke ' MUSIC MICRO PLEASE!! Jj V L S ECHO I is a high quality 3 octave keyboard of 37 full sized keys operating electroni- cally through gold plated contacts. The keyboard which is directly connected to the user port of the computer does not require an independent power supply unit. The ECHOSOFT Programme "Organ Master" written for either the BBC Model B' or the Commodore 64 supplied with the keyboard allows these computers to be used as real time synth- esizers with full control of the sound envelopes. The pitch and duration of the sound envelope can be changed whilst playing, and the programme allows the user to create and allocate his own sounds to four pre-defined keys. Additional programmes in the ECHOSOFT Series are in the course of preparation and will be released shortly. Other products in the range available from your LVL Dealer are our: ECHOKIT (£4.95)" External Speaker Adaptor Kit, allows your Commodore or BBC Micro- computer to have an external sound output socket allowing the ECHOSOUND Speaker amplifier to be connected. (£49.95)' - ECHOSOUND A high quality speaker amplifier with a 6 dual cone speaker and a full 6 watt output will fill your room with sound. The sound frequency control allows the tone of the sound output to be changed. Both of the above have been specifically designed to operate with the ECHO Series keyboard. -
Manual Text Entry Remains One of the Dominant Forms of Human- Computer Interaction
Poika Isokoski Manual Text Input: Experiments, Models, and Systems academic dissertation To be presented, with the permission of the Faculty of Information Sciences of the University of Tampere, for public discussion in Auditorium A1 on April 23rd, 2004, at noon. department of computer sciences university of tampere A-2004-3 tampere 2004 Supervisor: Professor Roope Raisamo Department of Computer Sciences University of Tampere, Finland Opponent: Dr. Shumin Zhai IBM Almaden Research Center, USA Reviewers: Professor Heikki Mannila Basic Research Unit Helsinki Institute for Information Technology, Finland Professor Ari Visa Signal Processing Laboratory Tampere University of Technology, Finland Department of Computer Sciences FIN-33014 UNIVERSITY OF TAMPERE Finland Electronic dissertation Acta Electronica Universitatis Tamperensis 340 ISBN 951-44-5959-8 ISSN 1456-954X http://acta.uta.fi ISBN 951-44-5955-5 ISSN 1459-6903 Tampereen yliopistopaino Oy Tampere 2004 Abstract Despite the emergence of speech controlled computers and direct manipula- tion that both have diminished the need to operate computers with textual commands, manual text entry remains one of the dominant forms of human- computer interaction. This is because textual communication is one of the main reasons for using computers. Mobile and pervasive computing have been popular research areas re- cently. Thus, these issues have a major part in the thesis at hand. Most of the text entry methods that are discussed are for mobile computers. One of the three main contributions of the work is an architecture for a middle- ware system intended to support personalized text entry in an environment permeated with mobile and non-mobile computers. The two other main contributions in this thesis are experimental work on text entry methods and models of user performance in text entry tasks. -
AMP17 Acornsoft Order Form Autumn 1984
Autumn 1984 Acornsoft Order form Acornsoft software for the BBC Microcomputer. The symbols tell you in what form the programs areavailable. cassette disc dual format 40/80 track disc ROM indicates suitability for Model A or B indicates you can use joysticks requires 6502 Second Processor. Home Education Spooky Manor SBE18 8.65 9.95 ElSNE18 10.00 11.50 ABC* SBE24 8.65 9.95 SNE24 10.00 11.50 Talkback* SBE22 8.65 9.95 SNE22 10.00 11.50 Workshop* SBE23 8.65 9.95 SNE23 10.00 11.50 Tree of Knowledge SBE04 8.65 9.95 ElSNE04 10.00 11.50 Peeko-Computer SBE02 8.65 9.95 SNE02 10.00 11.50 Business Games SBE03 8.65 9.95 SNE03 10.00 11.50 Podd XBE26 8.65 9.95 XNE26 10.00 11.50 Juggle Puzzle XBE27 8.65 9.95 XNE27 10.00 11.50 Squeeze XBE28 8.65 9.95 XNE28 10.00 11.50 Facemaker XBE10 8.65 9.95 ElXNE10 10.00 11.50 Words Words Words XBE19 8.65 9.95 El XNE19 10.00 11.50 Hide &Seek XBE11 8.65 9.95 XNE11 10.00 11.50 Total Acornsoft software for the BBC Microcomputer Order form Children from Space XBE16 8.65 9.95 XNE16 10.00 11.50 Let's Count XBE12 8.65 9.95 XNE12 10.00 11.50 Number Gulper XBE13 8.65 9.95 XNE13 . 10.00 11.50 Number Puzzler XBE14 8.65 9.95 XNE14 10.00 11.50 Number Chaser XBE15 8.65 9.95 Et XNE15 10.00 11.50 Cranky XBE17 8.65 9.95 XNE17 10.00 11.50 Table Adventures XBE18 8.65 9.95 XNE18 10.00 11 50 Languages FORTH SBL01 14.65 16.85 SNL01 17.30 19.90 SBL13* 43.35 49.85 LISP SBL02 14.65 16.85 SNL02 17.30 19.90 SBL14 43.35 49.85 LISP Demonstrations SBL09 8.65 9.95 SNL09 10.00 11.50 Microtext SBL04 43.35 49.85 SNL04 52.00 -
Acorn ABC 210/Cambridge Workstation
ACORN COMPUTERS LTD. ACW 443 SERVICE MANUAL 0420,001 Issue 1 January 1987 ACW SERVICE MANUAL Title: ACW SERVICE MANUAL Reference: 0420,001 Issue: 1 Replaces: 0.56 Applicability: Product Support Distribution: Authorised Service Agents Status: for publication Author: C.Watters, J.Wilkins and Others Date: 7 January 1987 Published by: Acorn Computers Ltd, Fulbourn Road, Cherry Hinton, Cambridge, CB1 4JN, England Within this publication the term 'BBC' is used as an abbreviation for 'British Broadcasting Corporation'. Copyright ACORN Computers Limited 1985 Neither the whole or any part of the information contained in, or the product described in, this manual may be adapted or reproduced in any material form except with the prior written approval of ACORN Computers Limited ( ACORN Computers). The product described in this manual and products for use with it, are subject to continuous development and improvement. All information of a technical nature and particulars of the product and its use (including the information and particulars in this manual) are given by ACORN Computers in good faith. However, it is acknowledged that there may be errors or omissions in this manual. A list of details of any amendments or revisions to this manual can be obtained upon request from ACORN Computers Technical Enquiries. ACORN Computers welcome comments and suggestions relating to the product and this manual. All correspondence should be addressed to:- Technical Enquiries ACORN Computers Limited Newmarket Road Cambridge CB5 8PD All maintenance and service on the product must be carried out by ACORN Computers' authorised service agents. ACORN Computers can accept no liability whatsoever for any loss or damage caused by service or maintenance by unauthorised personnel.