Basic computer - Input / output devices. Helpful for computer related jobs. Assistant, UDC, LDC
Basic Computer - Input/Output Devices: Theory + MCQs Test
For government jobs, computer knowledge is very necessary. This chapter on Input/Output Devices is important. Here, we have updated the MCQs test and theory for this chapter. It's helpful for FPSC Federal Public Service Commission, SPSC Sindh Public Service Commission, SST BPS16, BPS05-15, NTS, and IBA government job tests.
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Basic computer - Input/output devices. Helpful for computer-related jobs. Assistant, UDC, LDC.
For government jobs, computer are very necessary. This chapter Input Output Devices is important. Here, we have updated the MCQs test and theory for this chapter. It's Helpful for FPSC Federal Public Service Commission. SPSC Sindh Public Service Commission, SST BPS16, BPS05-15, NTS, IBA government job tests.
Computer Input/output devices
Click Below 👇 link to attempt online test
Magnetic Ink Card Reader (MICR)
MICR input device is generally used in banks as there are large number of cheques to be processed every day. The bank's code number and cheque number are printed on the cheques with a special type of ink that contains particles of magnetic material that are machine readable.
OCR (Optical Character Reader)
OCR scans the text optically, character by character, converts them into a machine readable code, and stores the text on the system memory.
Bar Code Readers
Bar Code Reader is a device used for reading bar coded data (data in the form of light and dark lines). Bar coded data is generally used in labelling goods, numbering the books, etc. It may be a handheld scanner or may be embedded in a stationary scanner.
OMR is a special type of optical scanner used to recognize the type of mark made by pen or pencil. It is used where one out of a few alternatives is to be selected and marked.
It is specially used for checking the answer sheets of examinations having multiple choice questions.
Printers
Printer is an output device, which is used to print information on paper.
There are two types of printers −
Impact Printers
Non-Impact Printers
Impact Printers
Impact printers print the characters by striking them on the ribbon, which is then pressed on the paper.
Non-impact Printers
Non-impact printers print the characters without using the ribbon. These printers print a complete page at a time, thus they are also called as Page Printers.
These printers are of two types −
Laser Printers
Inkjet Printers
Laser Printers
These are non-impact page printers. They use laser lights to produce the dots needed to form the characters to be printed on a page.
Inkjet Printers
Inkjet printers are non-impact character printers based on a relatively new technology. They print characters by spraying small drops of ink onto paper. Inkjet printers produce high quality output with presentable features.
Plotter
When we instead of printing A4 size page through a printer, when we want to print a Billboard or large poster for advertising and business purposes, we use then plotter for vector graphics.
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