Software hardware and memory

TODAY TOPIC IS SOFTWARE AND HARDWARE 

WHAT IS SOFTWARE?

Program or set of instruction used to do a specific task.

The software cannot be seen by user .

Software run on the hardware.

Hardware useless without software.

Examples - operating system, windows,linux,

Etc. ( android,ios macos. 

What is hardware?

The tangible components of the computer System which can be used to give input store data and sowing results.

Example: Moise, keyboard, moniter, printer, 

Processor, motherboard,  cable etc.

characteristics OF computer systems:

Data storage, Accuracy,  Reliable, speed, 

Versatile.

What is memory?

Memory is also known as the storage medium of the computer system.

This is a storage device that can store data/information.

Memory is two part of category 

Primary memory and secondary memory

Primary memory: temporary memory or volatile memory.

Store data for temprory period.

Primary memory is two part: (1) RAM (random access memory) (2)ROM (read only memory) 

SECONDARY MEMORY: can store a large amount of data in it. Data is saved into secondary memory and it cannot be delete the user permission this is called secondary memory.

WHAT IS RAM?( RANDOM ACCESS MEMORY)

Ram is the read write internal memory of the cpu for storing data program.

Volatile memory 


 ARITHMETIC  LOGICAL unit?

An elements of the computer system wich is used to arithmetic and logic operation.

Part of a computer system. I.e Data get lost when power supply is lost.

It is faster memory.

It is used in the normal operation of the computer after starting up the operating systems.

WHAT IS ROM? (READ ONLY MEMORY) 

Read only memory  is a type of non voletile memory used in computer and othe electronic devices Data store in rom can not be electronically  modefied after the manufacturing of the memory devices.Read only memory is useful for storing software that is rarely changed during the life also system known as firm ware. Software application for like video games, apps for programmable device.


CONTROL UNIT (CU)

Control unit  controls all the devices connected to the computer system so that's interruption  between devices communication cannot happen.

Cu not only control device communication but also program executions.

Cu mainly communicate between processor memory and computer pheripal unit (input/output)


                  NEXT TOPIC IS AN operating SYSTEM AND MAINFRAMS, SUPERCOMPUTER

I hope you like it 

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