To print a pay slip, computers need a software, giving step by step instruction to print the pay-slip. Further, it requires a basic data, such as the employee's name, basic salary, earnings, deductions etc., required to calculate and print the pay-slip.
Using an input device, a keyboard, these basic data items are fed to the computer and are stored in some storage device such as a hard disk drive.
The input device Keyboard converts the information we type at the keyboard into proper format for the computer to be able to work with them.
The brain of the computer (CPU, Central Processing Unit inside the computer) carries out step by step instructions given by the software.
By following these instructions and using the data stored in the storage device, CPU calculate and print the pay-slip. The final information such as the gross salary, gross deduction, net salary etc. are stored in the storage device for any future reference.
Finally, software instructs the computer to output the calculated information onto some output device such as on a monitor or a printer. The output device converts these information into a proper format that we can understand.
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