1.1.3 - Input, Output and Storage

• Computing
• Further Education (Key Stage 5)

Y12 - 1.1.3

Input , Output and Storage

Describe what an input device is

Input devices?

Describe what an output device is

Output Devices

Primary Storage

Directly accessed by CPU

Consists of RAM and ROM

RAM

Random Access Memory

• Stores all actively running processes
• Everything you can see on screen
• Like the O/S

ROM

Read Only Memory

• Stores system critical software
• Like startup sequences
• Example - BIOS

Volatility

Volatile

• Stored data lost when not powered

Non Volatile

• Stored data retained when no power

Secondary Storage

Non volatile long term storage

Why?

Types of secondary

MAGNETIC

OPTICAL

SOLID STATE

CD ROM

SD Card

USB Stick

Tape

SSD

Hard Drive

DVD

Bluray

Things to compare with Secondary?

What is virtual storage

Adv/Dis of Clouds