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What is Computer?

Computer is an electronic device developed by Charles Babbage. It takes input, processes data and produces output.

Input → Process → Output

Components of Computer

Hardware

• Input Devices
• Output Devices
• Storage Devices

Software

• Application Software
• System Software

Characteristics of Computer

• Speed
• Accuracy
• Automation
• Versatility
• Storage
• Reliability
• Security
• Diligence
• Multitasking
• Sharing

Files and Folders

What is Folder?

A folder is a container used to store files.

What is File?

A file is a collection of information stored in a computer.

Memory Units

Unit	Size
Bit	1 Bit
Byte	8 Bits
Kilobyte	1024 Bytes
Megabyte	1024 KB
Gigabyte	1024 MB
Terabyte	1024 GB

Practice & Test Yourself