Error Correction Codes Essay Research Paper Howard

Error Correction Codes Essay, Research Paper Howard Bacon Troubleshooting – Assignment 4 1) What are the questions you need to ask and the concerns you need to address before you perform a memory upgrade on a specific machine? Where can you get the infomation you need? a) To upgrade menory on a specific system board is to consult the manual of the system board that is supplied by the maker of the system board. The supplied manual will supply all needed infomation required to do the task of upgrading. In the supplied manual will be the needed infomation on 1) type of memory used. 2) the speed of memory required. 3) the total amount of memory the system board can support. 4) jumper pin settings required so the system board can reconize the new added memory or settings can be change by system BIOS or supplied software. 5) the location on the system board in which were to install the memory. 2) See attached print out of web based search data base and print out of system board supplier web base manual on line. 2) Fill in the table below. Be shure to use correct units in your answer. Microprocesser Number of Maximum Amount of Address Lines Memory Address 8088 20 1 meg 80286 24 16 meg 80386DX 32 4096 meg 80486DX 32 4096 meg Penitum 32 4096 meg Pentium II,III 36 65536 meg The Galaxy 64 17.5 TB 4) Explain how parity and ECC error checking works. Answeres supplied by Webopedia web page look up search engine. attached print out of webopedia attached. 1) ECC Memory . ECC is short for Error-Correcting Code memory, a type of memory that includes special circuitry for testing the accuracy of data as it passes in and out of memory. 2) Parity . The quality of being either odd or even. The fact that all numbers have a parity is commonly used in data communications to ensure the validity of data. This is called parity checking. 3) See page 186 of text for added infomation on Parity and ECC. 5) Interpret the two Advertisement #3 memory ads on the attached page. see page 228 of text. 1) 1Ч36 70/60 (4mb) 1 x 36 = 1 x (36/8) = 1 x 4 = 4 megbyte (4mb memory) Type of memory is Fast-Page Parity 70 ns, 72 pin See attached catalog copy of fast page 30 pin SIMM 2) 8Ч72-100 ECC (64mb) 64 megbyte memory using ECC (Error correcting codes) speed is 100 mhz. Type of memory is PC100 ECC SDRAM at 100 mhz speed. See attached web page print out on PC-100 SDRAM layout. Bibliography A+ Managing and Maintaining Your PC Third edition jean Andrews, Ph. D. ISBM 0-619-00038-4