Personal or micro

Computer Types: Descriptions

What makes a computer powerful?

Some Beginning Terms

What is a computer?

A computer is an electronic device that executes the instructions in a program.

A computer has four functions:

Input	a. accepts data
Processing	b. processes data
Output	c. produces output
Storage	d. stores results

Hardware	Physical parts of the computer.
Software	Programs (instructions) that tell the computer what to do
Data	Individual facts like first name, price, quantity ordered
Information	Data which has been massaged into a useful form, like a complete mailing address
Default	Original settings; what will happen if you don't change anything.

	Speed	A computer can do billions of actions per second.
	Reliability	Failures are usually due to human error, one way or another.
	Storage	A computer can keep huge amounts of data.

There is a computer for every use under heaven, or so it seems. Let's look at the kinds of computers that there are, based on general performance levels.

Computers for personal use come in all shapes and sizes, from tiny PDAs (personal digital assistant) and smart phones to hefty PC (personal computer) towers. More specialized models are announced each week - trip planners, expense account pads, language translators... To make things even more interesting, categories are blending together. Phones are getting really, really smart.

Smart phone 2-4.5" screen	PDA	Tablet PC	Netbook 9-11" screen Compressed keyboard
Laptop/Notebook 14-17" screen Full size keyboard	Tower	Desktop 19+" monitor

Дата добавления: 2014-12-23