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IST 195 Week 2 Lecture Notes

by: Alicia Notetaker

IST 195 Week 2 Lecture Notes IST 195 - M001

Alicia Notetaker
Information Technologies
J. Rubin

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About this Document

These are the notes from the lecture this week for IST 195..they are very detailed and should be very helpful if you need understanding on anything and might help you think of something for your pr...
Information Technologies
J. Rubin
Class Notes
25 ?




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This 3 page Class Notes was uploaded by Alicia Notetaker on Thursday September 10, 2015. The Class Notes belongs to IST 195 - M001 at Syracuse University taught by J. Rubin in Fall 2015. Since its upload, it has received 66 views. For similar materials see Information Technologies in Information technology at Syracuse University.

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Date Created: 09/10/15
Wednesday September 9 2015 IST 195 Week 2 Lecture 1 Notes Topic Hardware Shopping for a computer by price doesn39t mean anything For example Years ago 10 MB Drive for 3495 But now You can get a 3TB drive for 150 1TB is about 100000 times larger Years ago Laptop with 64K of memory whereas today laptops have 486 of memory 468 is about 64000 times larger Computing A computer is an electronic device which works within a binary digital system and has 4 main functions 1 Accept input Process input Produce output PFJOPD Storage this one is changing The System Unit The inside of a system unit on a desktop personal computer includes Drive Bay Power Supply adds the most weight to the computer more bulky Sound Card Expansion cards built in to the motherboard Processor The brain of the computer depending on how fast the processor is this brain can process information faster or more information at the same time does not store just processes Memory How fast the computer can operate Wednesday September 9 2015 Motherboard The main circuit board of the system unit Typically it is cheaper to replace the entire computer than to replace the motherboard if something happens to it Everything plugs into the motherboard Central Processing Units 2 Main CPU Manufacturers Intel and AMD Rated by number of cores Cores number of brains or slices within the brain Rated by clock speed MHz Measured in Hertz 1 Hz 1 cyclesignal per second Benchmark software used to test and evaluate CPUs Overclocking pushing it beyond rated speed 0 The speed at which your system runs programs CPU depends on part of the processor Clock speed and the number of cores all help determine the performance of the processor 3 pars of CPU 1 Control unit fetches and interprets instructions of RAM 2 ALU Executes instructions 3 Register Fast accessing storage inside the CPU The more transistors you can fit on any chip the more information you can process Nanotechnology the study of manipulating matter on a molecular level A nanometer is so small that it takes a billion of them to create a meter Wednesday September 9 2015 Parts A USB port can connect up to 127 different peripherals together with a single connector You can attach multiple peripherals using a single USB port with a USB hub Memory 2 types 1 Volatile Loses its content when power is turned off 2 Nonvolatile Does not lose content when power is removed RAM Temporary storage Open large files quickly Have more progams open at once The amount of RAM needed in a computer often depends on the types of software you plan to use Here s a link explaining how computer memory works httpcomputerhowstuffworkscomcomputermemoryhtm


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