Introduction
C is a general-purpose programming language created by Dennis Ritchie at the Bell Laboratories in 1972.
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Steps for learning C Language
1. Input unit:
This is the receiving section of the computer. It obtains information from various input devices and places this information at the disposal of the other units. Most information is carried into computers today through keyboards and mouse devices. Information can also be entered by speaking to your computer and by scanning images.
2. Output unit:
This is the shipping section of the computer. It takes information that has been processed by the computer and places it on various output devices to make the information available for use. Most information output from computers today is displayed on screens, printed on paper.
3. Memory unit:
This is the warehouse section of the computer. It retains information that has been entered through the input devices. This memory unit also retains processed information until that information can be placed on output devices, by the output devices. This Memory unit is also called memory or primary memory.
4. Arithmetic and Logic unit (ALU):
This is the manufacturing unit of the computer. It is responsible for performing calculations such as addition, subtraction, division, and multiplication. It contains decision mechanisms to find the logical relation between two variables.
5. Control unit:
The control unit controls all the component activities of the computer. It sends command and control signals and finds the sequence of instructions to be executed.
OPERATING SYSTEM
An operating is a program whiich contnnects the user and electronic hardware in a computer.it has a set of programs which supervise the activities of a computer and activate the operations of the hardware components such as main memory disk drives, keyboard, monitor, printer and so on.
