Page 11 - Digital_Kids_4

Pen Drive

• A small, portable device used to store and transfer data like songs, pictures,

videos, and documents.
• Also called USB drive or flash drive.

• Easy to carry, storage capacity ranges from a few GB to much higher.

Blu-ray Disc

• A special type of storage disc used to save very large amounts of data like high-
quality movies, videos, and games.

• Can hold up to 50 GB or more. Compcare

First learn Input & Output

devices, then Processing,
then Storage

CD DVD Pen drive Blue ray (Primary & Secondary).

1. Computer System = Hardware + Software
2. Input Devices – Keyboard, Mouse, Scanner, Microphone, Web Camera

3. Processing Device – CPU (Brain of Computer)

4. Output Devices – Monitor (VDU), Printer, Speakers
5. Storage Devices used to store data and instructions in the computer.

6. Primary Storage – RAM & ROM

• RAM – SRAM, DRAM
• ROM – PROM, EPROM, EEPROM

7. Secondary Storage – Hard Disk, CD, DVD, Pen Drive, Memory Card,

Blu-ray Disc
8. Printout = Hard Copy

9. Monitor = VDU (Visual Display Unit)

10. RAM = Temporary, ROM = Permanent

Teacher’s Note

Encourage students to write full forms (RAM, ROM, PROM, EPROM, EEPROM, VDU)
regularly for better retention.

11 Computer — 4