Lesson 2- The Computer Flashcards

1
Q

A ____ system is made up of various elements.

A

COMPUTER

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2
Q

Elements of a Computer?

A
  • Input Devices
  • Output Devices
  • Virtual Reality
  • Physical Interaction
  • Paper
  • Memory
  • Processing
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3
Q

Type of Computer(3)?

A
  • Desktop
  • Laptop
  • PDA (Personal Digital Assistant)
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3
Q

Our first generation of computer uses ____ ?

A

BATCH PROCESSING

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4
Q

Types of Keyboard?(2)

A
  • QWERTY
  • DVORAK
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5
Q

Most common text input device.

A

KEYBOARD

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6
Q

Text can be input into the computer, using a pen and a digesting tablet.

A

HANDWRITING RECOGNITION

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7
Q

For entering numbers quickly: ex. Calculator , PC Keyboard.

A

NUMERIC KEYPADS

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8
Q

Device use for pointing, positioning, and drawing.

A

MOUSE

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9
Q

2 types of Mouse?

A
  • Mechanical
  • Optical
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10
Q

Small touch sensitive tablets. Used mainly in laptop computers

A

TOUCHPAD

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11
Q

indirect pressure of stick, buttons for selection on top or front like a trigger.

A

JOYSTICK

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12
Q

for laptop computer. Miniature joystick in the middle of the keyboard.

A

KEYBOARD NIPPLE

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13
Q

Detect the presence of finger or stylus on the screen.

A

TOUCH-SENSITIVE SCREEN

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14
Q

Control interface by eye gaze direction.

A

EYE GAZE

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15
Q

Four keys (up, down, right, left) on keyboard.
Inverted “T”.

A

CURSOR KEYS

16
Q

number of pixels on screen.

A

Resolution

17
Q

ratio between width and height.

A

Aspect Ratio

18
Q

it tells how many different colors for each pixels.

A

Color Depth

19
Q

diagonal lines that have discontinuities in due to horizontal raster scan process.

20
Q

Softens edges by using shades of line color.

A

Anti-aliasing

21
Q

Stream of electrons emitted from electron gun, focused and directed by magnetic fields, hit phosphor-coated screen which glows.

A

Cathode Ray Tube

22
Q

Thin flexible sheets, updated electronically but retain display.

A

Digital Paper

23
Q

Beeps , bongs, clonks, whistles and whirrs.
Used for error indications.

24
Types of printers?(**3**)
* Dot-matrix printers * Ink-Jet printers * Laser printers
25
Can convert it all into a bitmap and sent to the printer. Different fonts, bitmaps , lines , digital photos etc.
**Page Description Languages**
26
Aim of word processing, etc. WYSIWYG (What you see is what you get).
**Screen and Page**
27
Take paper and convert into a bitmap
**Scanners** | Two types: Flat-bed and Hand-held
28
Converts bitmap back into text. Create problem for simple "Template matching" algorithms
**Optical Character Recognition**(OCR)
29
____ is the hardware in a computing device where the operating system (OS), application programs and data in current use are kept so they can be quickly reached by the device's processor.
**Random Access Memory** (RAM)
30
is a type of non-volatile memory used in computers and other electronic devices.
**Read-only Memory** (ROM)
31
is a memory management technique where secondary memory can be used as if it were a part of the main memory.
**Virtual Memory**
32
Reduced amount of storage required
**Compression**
33
____ the law where is said that computers get faster and faster.
**Moore's Law**