Which of the following devices are used for recognising the characters in the supermarkets? A. OCR device B. OMR device C. MICR device D. Bar code reader Which device is used for reading the characters written on the cheques? A. Hand-held scanner B. Light pen C. MICR device D. OCR device Which of the following […]

Which of the following device is not a media input device? A. Microphone B. Webcam C. Digital camera D. Graphics tablet 1. What is meant by an input device? What is the importance of an input device in a computer system? List different categories of input devices. Explain all the categories of keys found on

What are pointing devices? List different types of pointing devices. Explain the basic functioning of mechanical and optical mouses with the help of sketches. How does light pen help in inputting data into a computer system? Which input device is used for playing games? Explain it in detail with the help of a diagram.

Explain the different technologies used in the touchscreens. What are scanning devices? Explain the basic characteristics of these devices. Explain hand-held scanners and drum scanners in detail. What is meant by optical recognition? What are the basic components of the OCR devices? Explain each component briefly.

How are OMR devices used for recognising the characters in the document to be scanned? Explain briefly the basic function of an MICR device. How does bar code reader help in recognising the characters on the labels? Defi ne digital camera. Explain the basic features of a digital camera. Briefly explain the different types of

What does voice recognition system mean? Explain the different methods used for identifying the voice of the user in the voice recognition system. What are data acquisition sensors? What are media input devices? Explain any two media input devices briefly. How can we enter data into a computer system with the help of graphics tablet?

Explain briefly any five pointing devices with the help of diagrams. What are flatbed scanners? Explain the basic function of a slide scanner. Which of the following printers print by spraying ink on the paper? A. Daisy wheel printer B. Dot matrix printer C. Drum printer D. Laser printer

Which of the following is not an output device? A. Scanner B. Plotter C. Printer D. Speaker  Which of the following monitors are commonly used with desktop computers? A. CBT monitors B. CRT monitors C. CPT monitors D. None of the above Which of the following are the properties of a printer? A. Resolution B.

Which of the following units can be used to measure the speed of a printer? A. Characters per inch (cpi) B. Dots per inch (dpi) C. Pages per minute (ppm) D. None of the above Which of the following devices are capable of producing large-format drawings like graphs and construction drawings? A. Dot matrix printers

Which of the following is a hard copy output device? A. Printer B. Speaker C. Display monitor D. Projector Which of the following is an impact printer? A. Dot matrix printer B. Ink-jet printer C. Laser printer D. All of the above Which of the following is a non-impact printer? A. Daisy wheel printer B.