Memory - PowerPoint Presentation, Computer Science Engineering Notes | EduRev

: Memory - PowerPoint Presentation, Computer Science Engineering Notes | EduRev

 Page 1


Maninder Kaur
professormaninder@gmail.com
1 www.eazynotes.com
Page 2


Maninder Kaur
professormaninder@gmail.com
1 www.eazynotes.com
? The data and Instructions that are entered into the computer 
by the input devices needs to be stored in the computer’s 
memory before the actual processing.
? And the results after processing and the intermediate results 
also need to be stored in the computer’s memory.
? It basically provides the space for storing of the data and 
instructions before processing, during processing and after 
processing.
? So, Memory is an essential component of a digital computer. 
It is required for storage and subsequent retrieval of the 
instructions and data. 
? There are two types of memory :
Primary Memory
Secondary Memory
www.eazynotes.com 2
Page 3


Maninder Kaur
professormaninder@gmail.com
1 www.eazynotes.com
? The data and Instructions that are entered into the computer 
by the input devices needs to be stored in the computer’s 
memory before the actual processing.
? And the results after processing and the intermediate results 
also need to be stored in the computer’s memory.
? It basically provides the space for storing of the data and 
instructions before processing, during processing and after 
processing.
? So, Memory is an essential component of a digital computer. 
It is required for storage and subsequent retrieval of the 
instructions and data. 
? There are two types of memory :
Primary Memory
Secondary Memory
www.eazynotes.com 2
? Primary memory is mainly used by CPU, so it is termed as primary 
memory. It is also called main memory.
? Primary memory is a type of memory that is available in the form of 
silicon chips. These chips are created by IC by using very large scale 
integration techniques.
? It stores data and instructions that are necessary to perform an 
operation. It holds both the intermediate and final results of the 
computer during processing as the program proceeds. 
? Primary memory is typically high speed memory and very costly.
? Primary memory is volatile i.e. the contents are erased when the power 
is off.
? There are two types of primary Memory:
(a) Random Access Memory (RAM)
(b) Read Only Memory (ROM)
www.eazynotes.com 3
Page 4


Maninder Kaur
professormaninder@gmail.com
1 www.eazynotes.com
? The data and Instructions that are entered into the computer 
by the input devices needs to be stored in the computer’s 
memory before the actual processing.
? And the results after processing and the intermediate results 
also need to be stored in the computer’s memory.
? It basically provides the space for storing of the data and 
instructions before processing, during processing and after 
processing.
? So, Memory is an essential component of a digital computer. 
It is required for storage and subsequent retrieval of the 
instructions and data. 
? There are two types of memory :
Primary Memory
Secondary Memory
www.eazynotes.com 2
? Primary memory is mainly used by CPU, so it is termed as primary 
memory. It is also called main memory.
? Primary memory is a type of memory that is available in the form of 
silicon chips. These chips are created by IC by using very large scale 
integration techniques.
? It stores data and instructions that are necessary to perform an 
operation. It holds both the intermediate and final results of the 
computer during processing as the program proceeds. 
? Primary memory is typically high speed memory and very costly.
? Primary memory is volatile i.e. the contents are erased when the power 
is off.
? There are two types of primary Memory:
(a) Random Access Memory (RAM)
(b) Read Only Memory (ROM)
www.eazynotes.com 3
? In RAM, it is possible both to read data from the memory and to 
write data into the memory.
? In random access memory, any memory location can be accessed 
in a random way without going through any other location. The 
access time is same for each and every memory location.
? RAM is also called read-write memory. RAM is used in computers 
for temporary storage of data.
? The major drawback of RAM is that it is volatile i.e. it stores 
information as long as the power is supplied to it. Its contents 
are lost when power supply is switched off or interrupted.
? Different types of RAM:
Static RAM
Dynamic RAM
www.eazynotes.com 4
Page 5


Maninder Kaur
professormaninder@gmail.com
1 www.eazynotes.com
? The data and Instructions that are entered into the computer 
by the input devices needs to be stored in the computer’s 
memory before the actual processing.
? And the results after processing and the intermediate results 
also need to be stored in the computer’s memory.
? It basically provides the space for storing of the data and 
instructions before processing, during processing and after 
processing.
? So, Memory is an essential component of a digital computer. 
It is required for storage and subsequent retrieval of the 
instructions and data. 
? There are two types of memory :
Primary Memory
Secondary Memory
www.eazynotes.com 2
? Primary memory is mainly used by CPU, so it is termed as primary 
memory. It is also called main memory.
? Primary memory is a type of memory that is available in the form of 
silicon chips. These chips are created by IC by using very large scale 
integration techniques.
? It stores data and instructions that are necessary to perform an 
operation. It holds both the intermediate and final results of the 
computer during processing as the program proceeds. 
? Primary memory is typically high speed memory and very costly.
? Primary memory is volatile i.e. the contents are erased when the power 
is off.
? There are two types of primary Memory:
(a) Random Access Memory (RAM)
(b) Read Only Memory (ROM)
www.eazynotes.com 3
? In RAM, it is possible both to read data from the memory and to 
write data into the memory.
? In random access memory, any memory location can be accessed 
in a random way without going through any other location. The 
access time is same for each and every memory location.
? RAM is also called read-write memory. RAM is used in computers 
for temporary storage of data.
? The major drawback of RAM is that it is volatile i.e. it stores 
information as long as the power is supplied to it. Its contents 
are lost when power supply is switched off or interrupted.
? Different types of RAM:
Static RAM
Dynamic RAM
www.eazynotes.com 4
? ROM is a memory that performs only read 
operation.
? A ROM is a non-volatile memory. It stores 
information permanently. Its contents are not 
lost when its power supply is switched off.
? It is not accessible to user, and hence user 
cannot write anything into it. ROM is used to 
store permanent (fixed) programs. 
www.eazynotes.com 5
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