What is computer hardware?

The electronic and mechanical devices that make up the computer.

All programs and instructions for the Central Processing Unit (CPU).

What is computer software?

Computer software comprises the programs that enable a computer to function and carry out operations we ask of it.

Information temporarily held in Random Access Memory (RAM).

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

Which statement best describes ROM?

Read Only Memory - Information will NOT be lost after power off.

Read Only Memory - Information will be lost after power off.

Read Only Memory is also known as volatile memory.

Which device is erasable with ultraviolet light?

Erasable Programmable Read Only Memory (EPROM)

Electrically Alterable Read Only Memory (EAROM)

Which of the following are functions of the Microprocessor Central Processing Unit (CPU)?

Mathematical and Logic Functions.

Mathematical and Display Functions.

Logic and Data Transfer Functions.

Which statement is true regarding the computers in aircraft systems?

They communicate via digital information carried by data buses.

They communicate via analogue information carried by data buses.

They communicate via digital information carried by waveguides.

What is computer hardware?

The electronic and mechanical devices that make up the computer.

All programs and instructions for the Central Processing Unit (CPU).

All components that are inside the computer.

Which statement is correct with regards to the description of a computer>

A computer is an electronic device, which can accept and process data by carrying out a set of stored instructions in sequence.

A computer is an electronic device, which can accept and process data by carrying out a set of stored instructions in random order.

A computer is an electronic device, which can only process data using 8 bits of data at a time.

A word that consists of 8 bits is called a Byte.

A word that consists of 16 bits is called a Byte.

A word that consists of 2 bits is called a Byte.

What is an 'Address' in computer terminology?

A name or number that designates the location of information in a storage or memory device.

A name that designates the location of information in a storage device.

Where the computer lives within a system.

What is 'Firmware' in computer terminology?

Software (normally an application program) stored in ROM.

Hardware that is more robust than normal.

Software (normally an application program) stored in RAM.

What is 'Instruction' in computer terminology?

A machine word or set of characters in machine language that directs a computer to take a certain action.

A machine word or set of characters in multiple languages that directs a computer to take several actions.

An instruction is given to the computer via the CPU and instructs it to carry out a certain action.

What is the function of the Control Bus?

Provides control signals between the CPU, memory and I/O systems.

Provides control signals between the CPU, software and I/O systems.

Provides control signals between the CPU, hardware and I/O systems.

In a basic computer structure, what does the 'clock' generate?

The clock generates a periodic square-wave pulse train used as timing signals.

The clock generates a periodic sin-wave pulse train used as timing signals.

The clock generates a periodic AC/DC-wave pulse train used as timing signals.

What does this symbol mean?

CAUTION: Electrostatic sensitive device

CAUTION: Mechanical sensitive device

CAUTION: Hold this device with two fingers only

Which statement is correct for an ESD (Electrostatic Sensitive Device)?

It is susceptible to electrostatic charge.

It is not susceptible to electrostatic charge.

The device holds a charge which my cause an electric shock.

Which statement is correct for transportation of an ESD (Electrostatic Sensitive Device)?

Transport only in a closed conductive container.

Nothing special is required, the ESD's own housing protects the device.

Do not store in the vicinity of kinetic semi conducting devices.

Which statement is correct for an ESD (Electrostatic Sensitive Device)?

The device may only be opened on specially equipped workbenches.

As long as the device housing is not opened, no protective precautions need to be observed.

The device may only be opened inside the aircraft.

How can people accumulate electrostatic charges?

By friction e.g. walking on carpets or even pulling off a jacket.

Only by touching generators or batteries.

They cannot. People cannot accumulate electrostatic charges.

What can be done to prevent the accumulation of electrostatic charges?

Personnel must ground themselves by an appropriate means.

Nothing as people cannot accumulate electrostatic charges.

Do not touch any metal objects.

What is the correct method of grounding yourself before working on ESDs?

Wear a wrist strap connected to the aircraft ground.

Touch something metal to discharge yourself.

Wear a wrist strap connected to any metal part of the aircraft.

What is electrostatic charge?

The charge created in a material by the exchange of atomic electrons with another material.

The charge created in a material by an electrostatic sensitive device.

The charge created in a material by the exchange of data with another material.

Which of the following is a precaution that has to be observed when handling electrostatic sensitive devices?

Use natural bristle brushes when cleaning ESD components.

Test equipment must not be grounded.

ESD packaging must not be removed until power on.

How must faulty line replaceable units containing ESDs be handled?

They must be handled with the same care as new parts.

The can be handled without precautions as they are faulty anyway.

They must only be handled by personnel wearing appropriate protective clothing.

Which statement is correct about a unit containing an Electrostatic Sensitive Device (ESD)?

There may be a potential difference between the person handling the unit and the unit itself.

When handling units with unprotected plugs ensure they are not electrically connected.

Do not handle a unit without a protective cap on the plug.

What must be observed when removing Electrostatic Sensitive Devices (ESDs) from an aircraft?

First ensure that power is switched off.

First ensure that power is switched on.

Connectors must not be shorted to keep the same voltage potential.

What main safety precaution must be observed by personnel when working with electronically sensitive components?

A bonded wrist strap should be worn

Which statement is true for ESD problems?

The damage can rarely be repaired especially in very large scale integrated circuits.

They only occur due to passengers being unaware of the damage they cause due to walking on the carpet.

ESD problems only occur due to component overheat.

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The front instrument panel in the cockpit contains only instruments needed for navigation of the aircraft.

The front instrument panel in the cockpit contains all instruments that are in an aircraft.

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Which of the following instruments is not in the "Basic T"?

How many key indicators give the pilot attitude and position information in a 'Basic T' arrangement?

Which instrument is situated in top middle of a basic six arrangement?

Which instrument is at the top left of a basic T arrangement?

In a basic T arrangement which instrument is located at the bottom?

Which instrument is located on the top right of a 'Basic T' arrangement?

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What is computer hardware?

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What part of a computer performs all the mathematical and logic functions?

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