COMPUTER SCIENCE QUESTIONS… BY JACK

WHAT IS THE CPU? The cpu is the central processing unit.

FETCH ANDDD EXECUTE fetch-execute cycle - The sequence of actions that a central processing unit performs to execute each machine code instruction in a program.

WHY DO COMPUTERS USE BINARY? Binary is a set of instructions used to control the computer, and works from 1's and 0's, but the computer understands them as on or off signals. If the decimal system were used, there would need to be 10 different voltages, in which case there'd be more room for error, and therefore more room for corruption of data.

LOGIC GATES A logic gate is an idealized or physical device implementing a Boolean function, that is, it performs a logical operation on one or more logic inputs and produces a single logic output.

WHAT IS A LOGIC DIAGRAM? A logic diagram is a graphical representation of a program using formal logic.

WHAT IS ROM? ROM is an acronym for Read-Only Memory. It refers to computer memory chips containing permanent or semi-permanent data. Unlike RAM, ROM is non-volatile; even after you turn off your computer, the contents of ROM will remain.