AQA Computer Science GCSE - 3.4 Computer systems

When we put data into a computer…

• Processing
• Input
• Output
• Programs

The sets of instructions that tell a computer what to do.

• Binary Code
• Software
• Algorithms
• Hardware

If both inputs are 1, the output is 1

• MAYBE gate
• NOT Gate
• OR Gate
• AND Gate

Whatever is input, the opposite is the output

• NOT Gate
• OR Gate
• MAYBE gate
• AND Gate

if any of the inputs are 1, the output is 1

• MAYBE gate
• AND Gate
• OR Gate
• NOT Gate

Software used to store data in an organised, structured way.

• Spreadsheet

• Data Structure

• Flat File

• Database

Software that allows users to create items and use the computer productively.

• Application Software
• Malware
• Operating System
• Utility Software

The process of copying files for safe keeping.

• Disaster Recovery
• FTP
• Cloud Storage
• Backup

The process of organising files so they exist in contiguous sectors on disk.

• Defragmentation

• Sorting

• Copying

• Moving

Software that manages the hardware and other software.

• Anti Virus Software
• Utility Software
• Application Software
• Operating System