Mod5

Question 1

What does EIDS stand for?

Answer 1

Electronic instrument display system

Question 2

What does EFIS stand for?

Answer 2

Electronic flight instrument system

Question 3

Name 4 advantages of electronic instrument systems

Answer 3

Variability and variety 
Coloured displays 
Accentuating important data when needed
Fewer components needed
All monitors are same type
Displays are interchangeable 
Interconnected by data buses
Calculations in the system made by CPU

Question 4

What does CPU stand for?

Answer 4

Central processing unit

Question 5

What does ROM stand for?

Answer 5

Read only memory

Question 6

What does RAM stand for?

Answer 6

Random access memory

Question 7

What is the purpose of the input/ output devices?

Answer 7

Provides the interface between the microprocessor and the real world

Question 8

What is RAM’s purpose?

Answer 8

Used for temporary storage until the data is needed for processing

Question 9

What is Rom’s purpose?

Answer 9

Contains the main programme, instructs the CPU exactly what to do, when and how to do it

Question 10

What does a microprocessor do?

Answer 10

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

Question 11

Define hardware

Answer 11

All parts and devices that are used to process digital data

Question 12

Define software

Answer 12

Refers to all programmes and instructions for the CPU

Question 13

What does EPROM stand for?

Answer 13

Erasable programmable read only memory

Question 14

What does EAROM stand for?

Answer 14

Electrically alterable read only memory

Question 15

What is the purpose of a reference computer?

Answer 15

Used as a source of information to carry out a task, it doesn’t need instructions, inertial reference system is a good example of this.

Question 16

What is an informational computer?

Answer 16

A computer that collects data from various places then processes it and formats it for display

Question 17

What does a storage/ monitor computer do?

Answer 17

Retains information provided to them by other systems and computers

Question 18

What is an interactive computer?

Answer 18

This computer performs several different tasks depending on the operators inputs

Question 19

What percentage of ESD problems do not cause total failure?

Answer 19

80-90%

Question 20

Name the 4 factors that contribute to static electricity build up

Answer 20

Humidity
Temperature
Type of material
Form of movement

Question 21

“Nearly any movement of two materials will generate static”

True or false?

Answer 21

True

Question 22

Is the static effect high or low if the material is a conductor?

Answer 22

Low

Question 23

Is the static effect high or low if the material is a non-conductor?

Answer 23

High

Question 24

Why can’t a diode protect ESD’s?

Answer 24

The static discharge is too fast

Question 25

At what voltage could an ESD get damaged?

Answer 25

100V

Question 26

What happens if a semi-conductor or sensitive circuit is in the path of an ESD?

Answer 26

An uncontrolled current flow will occur and will damage the circuit.

Question 27

Does an ESD cause short circuits?

Answer 27

Very rarely

Question 28

Name the 6 protection methods against ESD’s

Answer 28

``` Facilities PPE Verification of anti static safeguarding Identification of ESD devices or LRU’s Correct handling of ESD Correct training ```

Question 29

Results of ESD’s can be?

Answer 29

``` Local overheating Evaporation Bending Layer splitting Holes ```

Question 30

Are ESD’s easily repaired?

Answer 30

NO

Question 31

What does LRM stand for?

Answer 31

Line replaceable module

Question 32

What does LRU stand for?

Answer 32

Line replaceable unit

Question 33

What does the colour variation of an ESD warning sign look like?

Answer 33

Black on yellow colour action

Question 34

Name all 9 precautions when handling ESD devices

Answer 34

Personnel should be trained ESD must be transported and stored in anti static material Should only be used at grounded work stations Handle faulty ESD the same as new ESD Test equipment in ESD protective areas Turn off power before removing or replacing Ground all equipment before use Packaging must be grounded before removing ESD use natural bristle brush when cleaning

Question 35

What is a data bus?

Answer 35

When data associated with memory is transferred to the input or output

Question 36

What is the address bus?

Answer 36

Specifies memory location or the input/ output part involved in a transfer

Question 37

What is a control bus?

Answer 37

Various control lines generated by the CPU