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Module 5 > M5.6a > Flashcards

M5.6a Flashcards

1
Q

What does the CPU (microprocessor) do?

A

Performs all of the mathematical and logic functions by manipulating the data in the memory

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2
Q

What is ROM

A
  • Read Only Memory

- Contains the main program telling the CPU what to do, when to do it and how to do it

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3
Q

What is RAM

A
  • Random Access Memory

- Temporary data until the data is needed for processing.

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4
Q

What is the purpose of the input/output device?

A

It provides the interface between the CPU and the outside world

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5
Q

What is the purpose of the address bus

A

It specifies the memory location or I/O port involved

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6
Q

How many buses are there and what are they

A

3

  • Data bus
  • Control bus
  • Address bus
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7
Q

What is the purpose of the Data bus

A

Used to carry the data associated with memory or I/O transfer

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8
Q

What is the purpose of the control bus

A

It is made up from various control lines generated by the CPU

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9
Q

What is hardware

A

The parts and devices used to process digital data

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10
Q

What is software

A

The programmes and instructions for the CPU

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11
Q

What is RAM also referred as

A

Volatile memory - unsaved data is lost at power off

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12
Q

What is ROM also referred to as

A

Non - volatile memory

Data and programming functions stored in the ROM are not lost at power off

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13
Q

What is PROM

A

Programmable Read Only Memory

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14
Q

What is the advantage of using EAROM over EPROM

A

Each individual part of the memory can be changed with ought erasing all of the data in the other elements

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15
Q

How does EPROM work

A

It works by erasing the existing program (by UV light) from the integrated circuit pack (IC). It is then reprogrammed with a series of 1s and 0s

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16
Q

When first manufactured what was important to remember about ROM

A

It is not usually changeable after manufacture due to a special masking technique adopted

17
Q

What is a reference computer

A

A computer that may be used as a source of information/data.

  • reference signals from this computer may be self contained
  • it only provides outputs
18
Q

What is IRS

A

Inertial Reference System ( A type of computer)

  • using laser gyros and accelerometers
19
Q

What’s the examples of IRS computers

A
  • Autothrottle
  • Flight Control Computers
  • Pilots Horizontal Situation Indicators
  • FMC ( Flight management computer)
20
Q

How are computers more often classified as

A

Classified on their tasks rather than by analogue, digital or hybrid

21
Q

What is an information computer

A

A computer that collects, processes and displays data

22
Q

What are examples of information computers

A
  • Maintenance computers

- EICAS ( Engine Indication and Crew Alerting System)

23
Q

What are storage/monitor computers

A

Computers that retain information provided to them by other systems or computers.

They generally do little signal processing

24
Q

What is an example of a monitor/storage computer

A

EECM Electronic Engine control monitor

25
Q

What are controlling computers

A

Computers with a primary task of controlling something

26
Q

What is an example of a controlling computer

A

FSEU Flap Slat Electronic Unit

Monitors and controls flap/slat positions

27
Q

What is an interactive computer

A

A computer that can perform several different tasks depending on operator input

28
Q

What is an example of an interactive computer

A

The FMC flight management computer

The flight crew can enter information via the CDU

29
Q

What are the 3 main types of computers on aircraft

A

Analog
Digital
Hybrid

30
Q

Many problems arose from improper handling of new technology LRUs. What was the uncerviability rate of the new technology found in the new test conditions as the old ones

A

It was three to four times higher

31
Q

Why is a fully integrated circuit hard to inspect by maintenance shop personnel

A

The automatic testing equipment are often not able to discover the problem

Module 5 (7 decks)

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