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Unformatted text preview: Monitors and printers are visual output devices
– Hard disk, diskette, and CDROM are storage output Data Flow
INPUT OUTPUT MEMORY CPU Notice that all information flows through the CPU
Referred to as the “brain” of the computer
CPU can only execute tasks according to the instructions given Software (a.k.a. program or application) Instruct the computer what to do
Operating system software—runs automatically when the computer is turned on – Allows the user to communicate with the computer by using input devices Application software—written by programmers to perform a specific task Section 1.11
Section 1.11 Memory ROM, RAM, Cache
ROM, RAM, Cache
RAM ROM Read Only Memory
The most basic operating instructions for the computer
Cannot be changed Random Access Memory
Temporary memory where data and instructions can be stored
Changeable / Erasable
Memory empty when turned on
Data is lost when turned off
RAM can be saved on a disk / CD to be used Cache (cash) SRAM (Static Random Access Memory)
Stores data that is frequently used so that it can be quickly retrieved by an application Section 1.12
Section 1.12 The CPU The CPU
The CPU CPU Chip measures about 2 cm by...
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This note was uploaded on 03/12/2014 for the course COMM 1500 taught by Professor Marybethcallison during the Spring '10 term at University of Georgia Athens.
- Spring '10