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Module 5 > 5.6 > Flashcards

5.6 Flashcards

1
Q

What does CPU stand for?

A

Central Processing Unit

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2
Q

What is the job of a microprocessor (CPU)

A

Performs all mathematical and logic functions of manipulation data in memory. Dictated by programming to arrive at destination.

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3
Q

What does ROM stand for?

A

Read Only Memory

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4
Q

What is the purpose of ROM?

A

Contains the main programme which instructs the CPU exactly what to do.

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5
Q

What I does RAM do?

A

Used as a temporary storage until data is needed for processing

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6
Q

What does RAM stand for?

A

Random Access Memory

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7
Q

What does I/O stand for?

A

Input/ Output Device

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8
Q

What does am I/O do?

A

Provides and interface between the microprocessor and the outside world, whether digital display, teletype, CRT or various other devices.

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9
Q

What are the three types of buses and what do they do?

A

Data bus - Used to carry the data associated with a memory or input/ output transfer

Address Bus - used to specify the memory location or input/ output port involved in transfer

Control Bus - made up of various control lines generated by the CPU

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10
Q

What are the two types of Memory?

A
  • Random access memory (RAM)

- Read Only Memory (ROM)

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11
Q

Which type of memory is volatile?

A

RAM because unsaved data stored in the RAM is lost at power off

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12
Q

What is RAM used for??

A

Used to store data which changes during the operation of the computer, such as results of calculations.

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13
Q

What is ROM used for?

A

Used to store programme steps and values, where memory values do not change e.g a dedicated system

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14
Q

Can contents of a ROM change after manufacturer?

A

No, due to the special masking technique adopted when programming the ROM

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15
Q

Why where PROMS’s invented?

A

To meet the needs of a user who may wish to do his own full programming or alter existing programmes.

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16
Q

What is normally used to write a programme into a PROM?

A

A special PROM programmer operating under computer control

17
Q

What are the two other categories of PROM?

A

Erasable Programmable Read Only Memory (EPROM)

Electrically Alterable Read Only Memory (EAROM)

18
Q

What does EPROM stand for?

A

Erasable Programmable Read Only Memory

19
Q

How is EPROM altered?

A

Exposing to ultra-violet light through a window in the cover.

20
Q

How is EAROM more advantageous than EPROM?

A

Each individual element can be changed without erasing all the data in other elements

21
Q

Define Hardware

A

All parts and devices that are used to process digital data.

22
Q

Define Software

A

Refers to all the programmes and instructions for the CPU

23
Q

What can computers be classed by hardware?

A

Analogue, Digital or Hybrid

24
Q

What are computers often classified as?

A

Tasks or application

25
Q

What is a reference computer?

A

Used as a source of information or data. Signals from thus computer may be self-contained and it only provides outputs

E.G - Inertial Reference System (IRS)

26
Q

What is an informational, computer?

A

Collects data from various places, processes it, and formats it for display. Main task is to collect data and display it in a central place.

E.G - Engine Indication and Crew Alerting System (EICAS)

27
Q

What are parameters set and monitored engine thrust displayed on?

A

CRT - Cathode Ray Tube

28
Q

What computer would Maintenance personnel use to get maintenance information?

A

Informational Computers

29
Q

What do storage/monitor computers do?

A

Retains information provided to the by other systems and computers. Information stored can be used by other computers

E.G - Electronic Engine Control Monitor (EECM)

30
Q

What do controlling computers do?

A

Primary task of controlling something such as FSEU (Flap/ Slat Electronic Unit) which provides a means of monitoring the flap level position.

31
Q

What is the largest category of computer?

A

Controlling Computer

32
Q

What is an Interactive Computer?

A

Perform several different tasks depending on operators inputs. Display information to operator and then manipulate it depending on interaction

E.G Flight Management Computer (FMC)

Module 5 (7 decks)

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