Computer Science
Class-VI
Chapter-13 Computer Memory
A. Tick the correct answer:
1. EEPROM stands for _______________________.
a. Electrically eraser programmable read only memories
b. Electrically erasable programmable read only memory
c. Electrically erasable programmable reads only memory
d. Electrically erasable program read only memory
Answer: Electrically erasable programmable read only memory
2. A computer language that consists of bianry digits is called___________.
a. assembly language b. binary language
c. high level language d. machine language
Answer: Binary language
3. 1024 terabyte=1_________________________________________(PB).
a. Exabyte b. Megabyte c. Terabyte d. Petabyte
Answer: Petabyte
4. SASD stands for ____________________________.
a. Sequential access storage devices b. Syntax access storage devices
c. Semantic access storage devices d. Sequential access storage data
Answer: Sequential access storage devices
5. Hard disk is a circular platter made up of _______________________.
a. polymer plastic b. coated plastics c. mylar plastic d. magnetic ferric oxide
Answer: Magnetic ferric oxide
B. Fill in the blanks:
1. There are two types of memory or storage__________________ and _____________________.
Answer: Primary, Secondary
2. Random access memory is also called_____________________ memory.
Answer: Read/Write
3. RAM is _______________________ memory and ROM is a _____________________ memory.
Answer: Random Access, Read Only
4. ROM stands for _____________________________________________.
Answer: Read Only Memory
5. An ______________________ is a special type of PROM that can be erased when ultraviolet light falls over it.
Answer: EPROM
6. A computer language that consists of binary digits is called __________________.
Answer: Binary language
7. Secondary memory is also called_______________________________ memory.
Answer: Auxiliary
8. In direct access storage device, data can be stored directly to any ________________.
Answer: Location
9. DVD stands for ___________________________________________.
Answer: Digital Versatile Disk
10. __________________________ are commonly used as a medium for digital representation of movies and other multimedia presentations.
Answer: DVD
C. Complete the following units:
1. 8 bits=__________________________Byte
Answer: 1
2. 1024 Bytes=______________________KB
Answer: 1
3. 1024 KB=______________________MB
Answer: 1
4. 1024 MB=_________________________GB
Answer: 1
5. 1024 GB=____________________TB
Answer: 1
D. Write the full form of the following:
1. RAM
Answer: Random Access Memory
2. ROM
Answer: Read Only Memory
3. DVD
Answer: Digital Versatile Disk
4. CD-ROM
Answer: Compact Disk-Read Only Memory
5. CD
Answer: Compact Disk
E. Answer the following questions:
1. What is the importance of memory? Name the two types of memory.
Answer: Memory sotes data and instructions. It can store a large amount of information and data.
There are two types of memory:
* Primary memory
* Secondary memory
2. What is the difference between RAM and ROM?
Answer: RAM: Random Access Memory is a part of primary memory. RAM stores data temporarily. It is a volatile in nature.
ROM: ROM is a chip where information is hardwired.In ROM when power supply is switched off, the information does not get erased or lost unlike RAM.
3. What is the difference between EPROM and EEPROM?
Answer: EPROM(Erasable Programmable Read Only Memory): An EPROM is a special type of PROM that can be erased when ultraviolet light falls over it.
EEPROM(Electrically Erasable Programmable Read Only Memory): An EEPROM is a special type of PROM that can be erased by exposing it to electrical current.
4. How is a hard disk different from CD-ROM?
Answer: A hard disk is the part of a system unit, often called a disk drive, hard drive, or hard disk drive, that stores and provides relatively quick access to large amount of data. Hard disk is a magnetic disk.
CD-ROM: It is designed to store computer data in the form of text and graphics and hi-fi stereo sound as well. ROM means the data on the disc is read only.
5. Explain the secondary memory.
Answer: Secondary memory is also called auxiliary memory, which stores data permanently. In primary memory data cannot be written permanently in large amount.
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