ITC 3

Front

What is the system unit in a personal computer?

Back

The system unit is a case that contains electronic components of the computer used to process data.

Front

What are the main components found inside the system unit of a desktop personal computer?

Back

Drive bay(s), Power supply, Sound card, Video card, Processor, Memory.

Front

What is the function of the motherboard?

Back

The motherboard is the main circuit board of the system unit.

Front

What does the processor (CPU) do?

Back

The processor interprets and carries out the basic instructions that operate a computer.

Front

What are the two main components of a processor?

Back

The control unit and the arithmetic logic unit (ALU).

Front

What is the purpose of the control unit in a processor?

Back

The control unit directs and coordinates most of the operations in the computer.

Front

What operations does the arithmetic logic unit (ALU) perform?

Back

The ALU performs arithmetic, comparison, and other operations.

Front

What is a machine cycle?

Back

A machine cycle comprises a set of four basic operations that a processor repeats for every instruction.

Front

What is clock speed and how is it measured?

Back

Clock speed is the pace of the system clock, measured in gigahertz (GHz).

Front

What is memory in a computer?

Back

Memory consists of electronic components that store instructions, data needed by those instructions, and the results of processing.