OCR stands for ____. A. Optical Character Recognition B. Optical Character Reader C. None of these D. None of these Explanation: OCR stands for Optical Character Recognition.
In banks, the data on cheques is read by the following device ____. A. OCR B. OMR C. MICR D. Barcode reader Explanation: MICR (Magnetic Ink Character Recognition) is used by banks to read cheques.
Identify the input device among the following options ____. A. Scanner B. Printer C. Monitor D. Speaker Explanation: A scanner is an input device that converts images/documents to digital form.
Light pen is which type of device? A. Output B. Input optical device C. Internal device D. None of these Explanation: A light pen is an input optical device used for pointing.
Ctrl, Shift and Alt are called ____ keys. A. Adjustment B. Function C. Alternate D. Alphanumeric Explanation: Ctrl, Shift, and Alt are modifier (alternate) keys.
Numeric key is a ____ key. A. Primary B. Secondary C. Normal D. None of these Explanation: Numeric keys are primary keys on the keyboard.
Who invented the QWERTY keyboard? A. Christopher Latham Sholes B. George Orville C. Isaac Newton D. Kurt Keplan Explanation: Christopher Latham Sholes invented the QWERTY keyboard layout.
What is the primary input device for a computer system? A. The keyboard B. A monitor C. A speaker D. A printer Explanation: The keyboard is the most common primary input device.
Which of the following is not an output device of a computer system? A. Printer B. Keyboard C. CRT Screen D. None of these Explanation: A keyboard is an input device, not an output device.
Trackball is a(n) ____. A. Storage device B. Output device C. Input device D. Programming language Explanation: A trackball is an input device used to control the cursor.