Revisions - Data Transmission and Representation

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A register stores the binary number:

$11100011$

Give the denary number for the binary number stored in the register.

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A register stores the binary number:

$11100011$

Give the hexadecimal number for the binary number stored in the register.

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A register stores the binary number:

$11100011$

Give the hexadecimal number for the binary number stored in the register.

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A register stores the binary number:

$11100011$

A logical left shift of two places is performed on the binary number stored in the register.

Complete the binary register to show its contents after this logical left shift.

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The negative denary number −99 needs to be stored in the register.

Complete the register to show the binary number that would be stored, using two’s

complement.

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The number 01001100 is added to 11100011

Add the two 8-bit binary numbers, using binary addition.

Give your answer in binary.

Multiple Select

Data is transmitted between a computer and a printer.

The data is transmitted one bit at a time down a single wire. The computer can transmit data

to the printer and the printer can transmit data to the computer, using the same connection.

Select two data transmission methods that will transmit data in this way.

• parallel full-duplex

• parallel half-duplex

• parallel simplex

• serial full-duplex

• serial half-duplex

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A car park has a payment machine that allows a customer to pay for their parking.

The cost of parking is displayed as a denary number on a screen on the payment machine.

The cost of parking is stored in two 8-bit binary registers.

For the parking cost of $10.50:

• register 1 stores the denary value 10 as binary

• register 2 stores the denary value 50 as binary.

Give the parking cost that would be displayed on the payment machine when the registers

store:

• register 1: 00010001

• register 2: 01000110

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The parking cost of $14.98 is displayed on the payment machine.

Give the 8-bit binary numbers that are stored in the registers to display the parking cost.

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The payment machine gives the customer a ticket when they have paid their parking cost.

Each ticket has a 4-digit hexadecimal ticket number that is stored as binary.

The binary number 1010 0000 0011 1101 is stored for a customer’s ticket number.

Give the hexadecimal ticket number that would be displayed on this customer’s ticket.

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A new computer comes with primary and secondary storage.

Complete each conversion.

8 bytes =

nibbles

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A new computer comes with primary and secondary storage.

Complete each conversion.

512 kibibytes (KiB) =

mebibytes (MiB)

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A new computer comes with primary and secondary storage.

Complete each conversion.

4 gibibytes (GiB) =

mebibytes (MiB)

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A new computer comes with primary and secondary storage.

Complete each conversion.

1 exbibyte (EiB) =

pebibytes (PiB)

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One of the images has a resolution of 1000 × 1000 and a colour depth of 2 bytes.

Calculate the file size of the image. Give your answer in bytes.

statements are given about methods of data transmission.

Select the statement applies to serial simplex, parallel half-duplex or serial duplex data transmission.

Some statements may apply to more than one data transmission method.

Multiple Select

Bits are transmitted along a single wire

• Serial Simplex

• Parallel Simplex

• Parallel half-duplex

• Serial duplex

Multiple Select

Data is transmitted in both directions

• Serial Simplex

• Parallel Simplex

• Parallel half-duplex

• Serial duplex

Multiple Select

It is only suitable for distances less than 5 Metres

• Serial Simplex

• Parallel Simplex

• Parallel half-duplex

• Serial duplex

Multiple Select

Bits form the same byte are transmitted one after the other

• Serial Simplex

• Parallel Simplex

• Parallel half-duplex

• Serial duplex

Multiple Select

Data is transmitted in both directions, but one direction at a time.

• Serial Simplex

• Parallel Simplex

• Parallel half-duplex

• Serial duplex

Multiple Select

Data may not arrive in the correct sequence

• Serial Simplex

• Parallel Simplex

• Parallel half-duplex

• Serial duplex

Word Cloud

A universal Serial Bus (USB) connection can be used to transmit data from a mobile device to a computer.

Mention three advantages of USB Connection