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j. Which of the following is called non-volatile memory?
(i) DRAM (ii) ROM
(iii) RAM (iv) CPU
k. How many megabytes are there in one gigabyte?
(i) 1056 (ii) 1032
(iii) 1024 (iv) 1000
l. A group of ____________ is called nibble.
(i) 4 bits (ii) 8 bits
(iii) 2 bits (iv) 16 bit
2. Fill in the blanks using the words given below:
Application software, Hardware, Operating system, ALU, Devices
Optical Disc, Zettabyte, USB, Byte
a. Parts of computer that we use to work with the computer are called ____________ .
b. ____________ is a part of computer that we can touch and see.
c. ____________ is used to perform a particular task.
d. ____________ is a system software.
e. ____________ is used to perform arithmetic calculations.
f. External hard disks can be connected with the help of ____________ ports.
g. The basic unit of measuring the computer memory is called ____________ .
h. An ____________ is an electronic storage device that uses laser beam to read and write data.
i. One ____________ equals 1024 EB.
3. Write 'T' for true and 'F' for false.
a. CPU is made up of ALU, CU, and MU. ____________
b. Speakers are the storage device. ____________
c. Joystick is an output device. ____________
d. CPU is made up of ALU, CU, and MU. ____________
e. Speakers are the storage device. ____________
f. Joystick is an output device. ____________
Computer System Organization - I/O devices, Storage devices 47

