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Itgs > HARDWARE > Flashcards

HARDWARE Flashcards

1
Q

Motherboard

A

Allows communication between electronic components in a system, provides connectors to other peripherals

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2
Q

Internal Clock

A

Every computer computer contains an internal clock,

I regulates the rate of which instructions are executed

synchornize all of their calculations. This ensures that the various circuits inside a computer Work together at the same time

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3
Q

CPU

A

Handles all the basic system instructions such as processing mouse and key board input, and running applications

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4
Q

ALU arithmetic logic unit

A

Performs arithmetic and logical operations

Numbers are added and muliplied here

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5
Q

Control Unit

A

Controls and Coordinates the other components of the computer - controls the instructions from the CPU

Manages direct operations by interpreting instructions

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6
Q

Buses

A

Wires and connectors that link CPU to primary storage.)RAM)

Pathway for data to travel

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7
Q

RAM (random access memory)

A

Stores program and data when processor is not using it.

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8
Q

ROM - read only memory

A

It refers to computer memory chips containing permanent or semi permanent data

Even after you turn off your computer the contents of ROM will remain

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9
Q

CMOS

A

CMOS uses battery power to retain information even when the power to the computer is off

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10
Q

Hard disk

A

Is an electro mechanical data storage device that uses magnetic storage to store and retrieve digital data

using one or more rigid rapidly rotating platters coated with magnetic material

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11
Q

Expansions Slots

A

Slots for special circuits boards.

They have ports to plug input and output devices for keyboards, mouse, monitor

Used for the computer to communicate with the outside world

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12
Q

Módem

A

A device that converts signals produced by one type of device to a form compatible with another

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13
Q

Bits

A

Computer operates with a basic two number system

Bits only has two possible values, 1 or 0

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14
Q

Bytes - Binary Number

A

The set and collection of bits

The byte is a unit of data that is presented with eight binary digits long.

ASCII characters set is used to represent characters

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15
Q

Touch Screen

A

A screen that can be managed by touching or interacting

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16
Q

OCR )optical character recognition)

A

A technology that is used to automate data from written or printed texts into the web

17
Q

Screen

A

A flat surface in a electronic device which displays the data instructed

18
Q

Keyboard

A

A device that allows you to enter numbers, letters and symbols into your computer

19
Q

Barcode Scanner

A

A portal or fixed input device that collects and reads data from a bar code

20
Q

Projector

A

A device that produces images generated by computers onto screens

21
Q

OMR )Optical Mark recognition)

A

It is a method of entering data into a computer system

They read pencil or pen mark on paper

22
Q

Computer Perhiperals

A

Is an auxiliary device such as a computer mouse or keyboard that connects to and works with a device in some way

Ex keyboard, mouse etc

23
Q

Sensor

A

A hardware device that can measure physical properties like temperature, movement, noice

24
Q

Printer

A

Machines that transforms an image into text from a computer into physical paper

25
Q

Microphone

A

A device that translates sound vibrations in the air into electric signals and scribes them to a recording medium or over a loudspeaker

26
Q

Mouse

A

A small hardware moveable used by a hand which lets you control the cursare that is visible on the computer screen while the mouse is moving on a flat surface.

27
Q

Smart cards readers

A

A device used to read smart cards

28
Q

Camera

A

An optical instrument to capture images or videos

29
Q

)RFID) Radio Frequency Identification

A

Refers to a wireless system comprised of two components tags and readers

EX. Used in supermarkets for making costumers checkout much faster, the RFID reader, reads the tag in the product and various information is presented, like what is that product and how much does it cost.

30
Q

Ergonomics

A

Is the process of designing or arranging workplace, products, and systems so that they fit the people who use them

It aim is to improve workspace and environments to minimize risk of injury

Itgs (2 decks)

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