Basics of computer
Basics of computer and memory
What is machine level language?
➡ It is a low-level language comprised of binary digits(ones
and Zeros).
what is High level language?
➡ Language designed to simplify computer programming. eg, C,
C++.
Basic computer architecture
Founder of computer?
Charles Babbage (1791-1871).
First computer in the world
ENIAC (Electronic Numerical Integrator and Computer) was the first
electronic programmable computer built in U.S.
➡ Size of data variables depends on the type of compiler.
Types of memory
what is primary memory?
➡ volatile memory. vanishes up when the system
is closed or when it is shut down. stores data temporarily.
Secondary memory?
➡ Non volatile. eg, hard disk, SSD. stores data
permanently.
Cache memory?
It is extremely fast memory type.
It acts as a buffer between RAM and CPU.
It holds frequently requested data and instructions so
that they are immediately available when
needed.
It is used to reduce the average time to access data
from main memory.
As we go from bottom to top cost of memory increases also,
when we move down the above triangle the speed of memory decreases.
It is a temporary storage area built into a CPU.
Example of complexity of water supply in our daily life.
Relation of above example with the computer memory.
hard disk is like the main supply or source of memory. which is accessed
through different levels in computer systems.
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