Semiconductor Memories Interview Question Answer - 1

1	What do you mean by memory?
	Memory The storing of data in the form of binary words is called as memory.
2	Explain : Data type memory and storage type memory
	Data type memory It is used to store data. Storage type memory It is used to store programs.
3	Which is the storage elements used in the memory?
	Storage element in the memory Capacitor in the semiconductor memory Magnetic domain in the magnetic memory Flip flops
4	Write the full form of MBM.
	The MBM stands for magnetic bubble memory.
5	Describe the difference between main and peripheral memory.
	Main memory It is an internal part of the computer. It is very fast. It is used generally for program memory. The semiconductor memories are suitable for main memory because of its higher speed. The semiconductor memories are constructed using semiconductor ICs. Peripheral memory It is add on memory which consists of large storage capacity. It is much slower than the main memory. It is generally used for store large amount of data. Magnetic tape and magnetic disk are example of peripheral memories. It is also called as auxiliary memory.
6	Define : Address, word, cell and capacity of memory
	Address The storage location of the binary information or bits is called as address. Word The fundamental group of bits is called as word. Cell A storage element is called as cell. Capacity of memory The total number of bits or bytes or words that can be stored by memory is called as capacity of memory.
7	Explain the term : Volatile memory and Non – volatile memory
	Volatile memory It is a memory whose data is lost when the power supply is cut off. Non – volatile memory It is a memory whose data does not lost when the power supply is cut off.
8	How many bits does a byte consist of?
	One byte means 8 bit
9	What do you mean by 4K?
	The size of the memory is represented by K (It is equal to 210 = 1024 words). Therefore the memory of size 212 (4096 words) is equal to 4K.
10	What do you mean by ‘mass storage’?
	Mass storage It is memory that is external to main computer.
11	What do you mean by reading and writing of data?
	Reading and writing data The process of storing data in the memory is called as writing in the memory. The process of retrieving data from the memory is called as reading in the memory.
12	Describe the importance of read / write input in the memory.
	The read operation takes place when read / write is equal to unity whereas the write operation takes place when read / write is equal to zero.
13	What is meaning of 64 × 4 memory?
	The word size of the memory is 4 bits and it stores 64 words.
14	How many address line does the 4K × 16 memory consists of?
	There are 12 address lines requires for memory 4K × 16 ( The 4K is equal to 4 × 1024 = 4096 words = 212 ).
15	Which type of memory is used for permanent storage of programs?
	ROM ( Random access memory)

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