Page 10 - ThinkGPT_V2.1_C5_Flipbook
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When you were a child, you were taught about alphabets and numbers. Do you still remember
them? How? This is because these were stored in your memory. Just like human memory,
computers also have memory to store all the data and instructions for performing various tasks.
Data and Information
In your daily life, you come across a lot of facts and figures in the form of numbers, images,
etc. These are called data. You can say that a collection of raw and unorganised facts
is known as data. When this data is organised and given a specific context, it becomes
information.
Memory
The data and instructions that are entered into the computer using input devices are to be
stored in the memory. There are two types of memory:
1. Primary Memory
2. Secondary Memory
Primary Memory
This is the main memory of the computer. The CPU can directly access this memory. It is
fixed on the motherboard of the computer.
Primary memory is further divided into two types:
1. Random Access Memory (RAM)
2. Read Only Memory (ROM)
Random Access Memory (RAM)
RAM is a temporary memory. The information
stored in this memory is lost when the computer
is turned off. That is why it is also called volatile
memory. It stores data and instructions given by the user and also the results produced by
the computer temporarily.
Types of RAM
1. Dynamic RAM (DRAM): It requires continuous power to refresh the data stored.
2. Static RAM (SRAM): It also requires constant power to hold on to data, but it does not
need to be continuously refreshed the
way DRAM does. The human brain can hold about 2.5
petabytes of information, equivalent to a
However, SRAM is significantly faster and
TV show being played for approximately
uses less power than DRAM.
342 years non stop.
8 Premium Edition-V

