Pakdad's Revision Quiz

Data can either be 1. __________ or 2. ____________.

• 1. Numbers 2. Symbols

• 1. Analogue 2. CSVs

• 1. Digital 2. Analogue

• None of the above

• All of the above

What are the examples of analogue devices? Select all that apply.

• Barcode

• Time read from a sundial

• Number of cars in a car park

• Room light dimmer switch

• Room light on/off switch

Spot the odd one out.

• Data stored on a magnetic disk

• Position on a compass dial

• Digital watch

• Traffic light sequences

• Floor indicator on a lift

A/an _______ is a temporary storage space in memory used to store data while these are being moved on.

What is a polling system?

• A signal to the processor from the peripheral device indicating that an event has occurred.

• The process of the first signals establishing that the peripheral device can communicate successfully.

• A system where the processor asks the peripherals if they have anything to report.

• A comma separated file format where each variable is separated by lots of commas.

• None of the above

A modem is used to:

• Convert both analogue and digital into a CSV file to send to someone.

• Measure the sound sampling rate of something.

• Turn ASCII code into letters, numbers or symbols.

• Convert the binary digits from a digital computer into an analogue signal.

• To do an ADC job faster and for a much cheaper price.

Sound is an/a 1. _________ waveform, and for a computer to be able to process, store and play it back, it must be converted into an/a 2. _________ signal.

• 1. digital 2. analogue

• 1. analogue 2. digital

• 1. binary 2. analogue

• 1. microphone 2. checksum

• none of the above

The count of the number of bits in a transmission unit sent to the system is called the __________.

Modems are used to enable data to be passed from one place to another using communication links like:

• Telephone wires

• Radio links

• Optical cables

• All of the above

• None of the above

ASCII stands for: