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A microprocessor is a CPU on a single chip. It is built as an integrated circuit (IC), possibly comprising millions
of circuits. A microcontroller is a small computing device consisting of a CPU, RAM, ROM and other peripherals
embedded in some other device such as an air conditioner, a washing machine, or an automobile. A microcontroller
typically performs a dedicated task without human intervention.
1.3 Input Devices
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1.3.1 Keyboard
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A Braille keyboard is an input device that helps visually impaired people for entering data into a computer.
1.3.2 Mouse
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1.3.3 Scanner
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1.3.4 Light Pen
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1.3.5 Optical Mark Reader (OMR)
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A smart card reader is used to fetch input from credit cards, debit cards or ATMs.
1.3.6 Touch Screen
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Introductonnton oomuttrn Syttoy 11

