EECS 1520 Chapter Notes - Chapter 5: Dvd, Surface Acoustic Wave, Central Processing Unit

• School: York University
• Department: Electrical Engineering and Computer Science
• Course: EECS 1520
• Professor: lew

Document Summary

Addressability: number of bits stored in each addressable location in memory. Performs basic arithmetic operations such as adding. Performs logical operations such as and, or, and not. Most modern alu"s have a small number of special storage units called registers. Input unit: a device through which data and programs from the outside world are entered into the computer (keyboard, mouse, and scanning devices) Output unit: a device through which results stored in the computer memory are made available to the outside world (printers and video display terminals) Control unit: the organizing force in the computer. 2 registers in the control unit: instruction register (ir): contains the instruction that is being executed, programs counter (pc): contains the address of the next instruction to be executed. ** alu and cu comprise the central processing unit (cpu) Memory: is a collection of cells each with a unique physical address. Cache memory: a type of small, high speed data for frequently used data.