Computer Software Telegram Channel Link

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CPU:

Control unit, arithmetic logic unit and memory are together called the central processing unit or CPU

Hardware:

Computer devices like keyboard, mouse, printer, etc. that we can see and touch are the hardware components of a computer.

Software:

The set of instructions or programs that make the computer function using these hardware parts are called software

👉The basic parts of a computer are as follows:

1️⃣Input Unit − Devices like keyboard and mouse that are used to input data and instructions to the computer are called input unit.

2️⃣Output Unit − Devices like printer and visual display unit that are used to provide information to the user in desired format are called output unit.

3️⃣Control Unit − As the name suggests, this unit controls all the functions of the computer. All devices or parts of computer interact through the control unit.

4️⃣Arithmetic Logic Unit − This is the brain of the computer where all arithmetic operations and logical operations take place.

5️⃣Memory − All input data, instructions and data interim to the processes are stored in the memory. Memory is of two types – primary memory and secondary memory. Primary memory resides within the CPU whereas secondary memory is external to it.

👉The processes that can be applied to data are of two types :

1️⃣Arithmetic operations − Examples include calculations like addition, subtraction, differentials, square root, etc.

2️⃣Logical operations − Examples include comparison operations like greater than, less than, equal to, opposite, etc.

👉Input-Process-Output Model

✔️Computer input is called data and the output obtained after processing it, based on user’s instructions is called information. Raw facts and figures which can be processed using arithmetic and logical operations to obtain information are called data.

There are no prerequisites for this course except a desire to learn about how a computer works👌

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