SLR18 Input and output devices

Question 1

Input device

Answer 1

“Any peripheral device that can accept data, presented in the appropriate machine-readable form, decode it and transmit it as electrical pulses to the CPU.”

Question 2

Output device

Answer 2

“Any peripheral device that translates signals from the computer into a human-readable form or a form suitable for reprocessing by the computer at a later stage.”

Question 3

Secondary storage

Answer 3

“Non-volatile memory (does not lose stored data when the device is powered down) that is not directly accessible by the CPU because it is not accessed via the input/output channels (it is an external device).”

Question 4

Hard disk

Answer 4

“Storage medium which uses surfaces coated with a layer of magnetic material on which data can be stored by magnetically setting the arrangement of the magnetic material; this is done by electromagnetic read/write heads.”

Question 5

Optical storage

Answer 5

“Storage medium that uses plastic discs on which the data is stored as patterns on the surface in pits and lands.”

Question 6

Solid-state storage

Answer 6

“Collection of memory chips that is controlled by its own software to make the collection of chips act like a disk drive. It has no moving parts.”

Question 7

“Any peripheral device that can accept data, presented in the appropriate machine-readable form, decode it and transmit it as electrical pulses to the CPU.”

Answer 7

Input device

Question 8

“Any peripheral device that translates signals from the computer into a human-readable form or a form suitable for reprocessing by the computer at a later stage.”

Answer 8

Output device

Question 9

“Non-volatile memory (does not lose stored data when the device is powered down) that is not directly accessible by the CPU because it is not accessed via the input/output channels (it is an external device).”

Answer 9

Secondary storage

Question 10

“Storage medium which uses surfaces coated with a layer of magnetic material on which data can be stored by magnetically setting the arrangement of the magnetic material; this is done by electromagnetic read/write heads.”

Answer 10

Hard disk

Question 11

“Storage medium that uses plastic discs on which the data is stored as patterns on the surface in pits and lands.”

Answer 11

Optical storage

Question 12

“Collection of memory chips that is controlled by its own software to make the collection of chips act like a disk drive. It has no moving parts.”

Answer 12

Solid-state storage