(Computer System) (System) 3 1. (Hardware) 2. (Software) 3. (Peopleware)

Central Processing Unit 33 (wait state) (access time) 60 125 ( 1 10-9 ) 33 (cache memory)

(volatile memory) (nonvolatile memory) (Random Access Memory: RAM) (Read Only Memory : ROM) (bios) (Erasable Programmable Read Only Memory : EPROM

Input unit1. (Input unit) ( Keyboard ) ( Mouse) ( Scanner), (Video Camera), (Microphone), (Touch screen), (Trackball), (Digiter tablet and crosshair)

output unit (output device)