Input output and storage

Question 1

What is a storage device?

Answer 1

A peripheral device that allows data to be stored in magnetic/optical/solid state and is no-vlatile

Question 2

What is an input device?

Answer 2

Allows data to be enters onto a computer

e.g. keyboard

Question 3

What is an output device?

Answer 3

Allows data to be retrieved from a computer after proccessing
e.g screen speaker

Question 4

What is OMR?

Answer 4

Optical mark reader-Marks placed by user in certain places on paper .each location equals to a value
example:lottery tickets ,multiple choice exams
good for this choice because their are only limited number of answers(accurate)

Question 5

What is OCR?

Answer 5

optical character recognition(records images by scanning letters)
the scanned image is compared to a library of possible characters for best fit then stored digitally
example it can be used for blind people reading books or mail

Question 6

What is magnetic storage?

Answer 6

uses a magnetisabile material disk drives magnetic tape

Question 7

What is optical storage?

Answer 7

CDs,DVDs

Question 8

What is RAM

Answer 8

Random Access Memory
Contains OS, running app ,data currently being used
Volatile(contents lost)
Read and write

Question 9

What is ROM

Answer 9

Read Only Memory
Contains bootstrap
Non-volatile(content retained)
Read only

Question 10

What is virtual memory?

Answer 10

Virtual memory is Part of the hark drive and is used as an extension to RAM