1.1.3. Input, Output and Storage: Characteristics of Contemporary Processors: Computer Science A-Level OCR

Give two types of magnetic storage.

Two from:

● Hard disk drive

● Floppy disk

● Magnetic tape

Give three examples of input devices.

Three from:

- Keyboard

- Mouse

- Microphone

- Webcam

- Touchpad

- Barcode reader

- Magnetic stripe reader, etc.

Give an example of a device which is used for both input and output

Touchscreen

What name is given to the areas on a CD’s surface which have been burned into grooves by a laser?

Pits

What does CD stand for?

Compact Disc

Give three examples of output devices.

Three from:

● Speaker

● Monitor

● Printer

● Projector

Which has the highest typical storage capacity: CD, DVD or Blu-Ray?

Blu-Ray

In a hard disk drive, what is mounted at the end of the actuating arm?

Read / write head

Give two types of magnetic storage.

Two from:

● Hard disk drive

● Floppy disk

● Magnetic tape

Which storage device has typical capacities in the range 500GB-5TB?

Hard disk drive

Give two disadvantages of SSDs.

● High cost per GB

● Limited lifespan

What does ROM stand for?

Read Only Memory

Describe the structure in which information is stored in flash memory

Information is stored in blocks, which are combined to form pages.

What is meant by non-volatile?

A non-volatile storage medium does not lose its information when power is lost.

Which two types of logic gate are used in flash storage?

NAND and NOR

Give three advantages of SSDs.

● High transfer speeds

● Lightweight

● No moving parts

Is ROM volatile or non-volatile?

Non-volatile

Which form of storage device uses silicon semiconductors to store information?

Flash

Give three disadvantages of CDs.

● They are easily damaged by scratches

● They have relatively low capacities

● They have relatively slow transfer speeds