1.1 Computer Hardware Flashcards

1
Q

what is computer hardware?

A

the physical parts attached to a computer

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2
Q

what is an input device?

A

a device that allows data such as text, images, video or sound to be entered into a computer

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3
Q

what is an output device?

A

how an output is created by the computer

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4
Q

examples of input devices

A

• mouse - highlight, select and edit text
• keyboard - enter characters
• microphone - input sound
• controller

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5
Q

examples of output devices

A

• monitor - show visual display
• printer - print physical documents
• speakers - output sound
• headphones - output sound
• plotter - draws complex drawings

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6
Q

examples of input/output devices

A

• headphones with a microphone
• touch screen monitors

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7
Q

types of monitors

A

LCR (liquid crystal display)
- flickers

LED
- less power, more expensive

Touchscreen

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8
Q

what is resolution?

A

the number of horizontal and vertical pixels on a monitor

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9
Q

what is a smartphone (communication device)

A

small computer that functions as a telephone

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10
Q

what is a laptop (communication device)

A

mobile computer

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11
Q

what is bluetooth (communication technology)

A

enables devices to communicate using radio frequency technology

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12
Q

what is an infrared device (communication technology)

A

the transference of data wirelessly

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13
Q

what is a biometric device

A

a device that uses a human characteristic as part of a security mechanism
- improved security
- expensive

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14
Q

process of connecting to the internet

A

device
switch
router
modem
ADSL
ISP

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15
Q

what does a switch do

A

connect devices without wifi connection

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16
Q

what does a router do

A

connects devices to the internet

17
Q

what does a modem do

A

converts data signals from digital to analogue and analogue to digital

18
Q

what is ADSL

A

carries analogue data long distances

19
Q

what is ISP

A

internet service provider

20
Q

what is a hybrid

A

a modem and router combined