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4. A group of is called a nibble.

a. 6-bits b. 8-bits

c. 2-bits d. 4-bits

B. Fill in the blanks with the correct words.

Hints Hard disk, Zettabyte, USB, Byte

1. External hard disks can be connected with the help of ports.

2. The basic unit of measuring the computer memory is called .

3. is permanently fixed in the CPU box.

4. 1 equals 1024 EB.

C. Answer the following questions:

1. What is computer memory?

2. What is a secondary memory?

3. Define hard disk and pen drive.

4. Differentiate between RAM and ROM.

21 st
D. Brain Boost. Century #Technology Literacy
Skills #Critical Thinking
1. Name these storage devices.

#Data Storage and Memory 15