Computer concepts

Memory management

A key task that operating systems perform to us the RAM efficiently.

Multiprocessing

A processing technique an operating system can use if the computer has many processors.

Parellel Processing

A processing technique an operating system uses to divide one task among many processors.

Multithreading

A processing technique an operating system uses to process many parts of a single program.

CAPTCHA

A system that verifies that user input is not computer-generated by having you type in distorted characters that appear on the screen.

Bus

An electronic channel that transfers data in multiple directions.

Firewall

Creates a blockade between a corporate or personal network and the internet.

Programable

Flash memory is an example of _____ memory.

Set up _______ if you want to be notified when new online information about a topic becomes available.

Google alerts.

CPU

Memory chips or modules hold data and programs as they are being processed by the____ and are usually found on the motherboard.

Username

Often used in combination with a password to gain entry to a computer system.

CDs and DVDs are types of____ storage.

Optical

Virtual memory

Part of the hard drive that the operating system uses and additional RAM

ALU

Performs arithmetic and logic functions in the CPU.

To customize search results, you can change _________ , such as the number of results displayed per page.

Preferences

Data stored on a hard disk uses _____ access, so you can go directly to the areas of the drive where the data is stored.

Random or direct

Data stored on a tape is ______ so it requires you to forward or rewind the tape to access information.

Sequential

Processor clock

Sets the speed at which the cpu executes instructions.

USB flash drives and camera memory cards are types of ____ storage.

Solid state

Encryption

Technique used to scramble or code data that is transmitted over a network.

Biometrics

Technology that authenticates identity by scanning a persons physical characteristics, like fingerprints.

CPU

The "Brain" of a computer.

ROM

The data stored in____ is saved even when a computer has been powered off.

Cycle

The smallest unit of time a processor can measure.

Virtual

When an operating system employs ____ memory, it swaps files to the hard disk.

RAM

When the computer is shut down, the information in____ is erased.

Search engines place the most relevant _______ on the first few pages of search results.

hits

When preparing for a search, choose_________ that makes the search term unique and specific.

key words

Hard drives with read/write heads that move over the surface of platters are a type of____ storage.

magnetic

One way to refine a search term is to use a word base, or __________ , to broaden the search.

word stem