Computers Flashcards

1
Q

Analog

A

Continuous, infinitely varying

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2
Q

Binary

A

Only 2 digits-0 and 1

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3
Q

Power supply

A

Converts AC to usable DC

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4
Q

Mother board

A

Main board, system board, with expansion capability

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5
Q

Daughter board

A

Extension or expansion board

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6
Q

ROM

A

Read Only Memory

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7
Q

RAM

A

Random-access memory

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8
Q

Hard drive

A

Data storage device using metal rigid discs

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9
Q

Floppy drive

A

Data storage device using flexible plastic discs

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10
Q

USB

A

Universal Serial Bus developed to connect cables, computers and other electrical devices.

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11
Q

CPU

A

central processing unit performs the calculations

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12
Q

Bit

A

A single unit - 0 or 1

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13
Q

Byte

A

8 bits

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14
Q

Word

A

The unit of data (number of bits) used by a particular processor design

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15
Q

Heat sink

A

A component that cools a device by dissipating heat into the surrounding air

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16
Q

Polarize

A

Designed so that the plug and receptacle fit together in only one way

17
Q

Cable

A

Multiple electrical conductors grouped together

18
Q

PCB

A

Printed circuit board

19
Q

Contacts

A

Junction where 2 or more electrical conductors touch

20
Q

Digital

A

Discrete, in steps