Ultimate Quiz On Information Technology

A speaker is an audio output device because it is designed to produce sound or audio signals. It takes electrical signals from a device such as a computer or a smartphone and converts them into audible sound waves. Speakers are commonly used in various audio systems, such as home theaters, music players, and computer systems, to play back audio content for the user to hear.

A scanner is an input device that converts printed material to a form the computer can use. It does this by using optical character recognition (OCR) technology to capture the text or images on a physical document and convert them into a digital format that can be stored and manipulated by a computer. This allows the computer to process and analyze the information contained in the printed material, making it a valuable tool for tasks such as document digitization, data entry, and image editing.

The keyboard is the primary input and control device for computer software like word processing, spreadsheet, and database management. It allows users to enter text and commands into the computer system. The keyboard consists of a set of keys, including letters, numbers, punctuation marks, and special function keys, which can be used to type and interact with software applications. It is the most commonly used input device for computers and provides a convenient and efficient way to input data and control software programs.

POS stands for "Point of Sale." It refers to the location or the moment in which a transaction takes place, typically involving the sale of goods or services. It is commonly used in the retail industry, where customers make purchases at a physical store or through an online platform. The abbreviation "POS" is also used to describe the technology and software systems that facilitate and process these transactions, including cash registers, barcode scanners, and payment terminals.

A touch screen monitor can be considered both an input and output device because it allows users to interact with the computer by touching the screen, which is an input action. Additionally, it displays the output of the computer system by showing the results of the user's input on the screen. Therefore, it can be classified as both an input and output device.

OMR stands for Optical Mark Recognition, which is a technology used to detect and analyze marks made on a paper. It is commonly used in marking multiple-choice examination questions because it can quickly and accurately read and process the marks made by students on the answer sheets. OCR (Optical Character Recognition) is used to recognize and convert printed or handwritten text into machine-readable format, MICR (Magnetic Ink Character Recognition) is used in banking for processing checks, and POS (Point of Sale) refers to the system used for transactions in retail stores. Therefore, OMR is the most suitable option for marking multiple-choice examination questions.

MICR (Magnetic Ink Character Recognition) is the correct answer because it is a technology used in banks to process cheques. MICR uses special ink and characters that are printed on the bottom of cheques in magnetic ink. This technology allows banks to quickly and accurately read the information on the cheques, such as the account number and the amount, by using magnetic sensors. This helps in automating the cheque processing system and reduces errors in data entry.

The two main categories of printers are impact and nonimpact. Impact printers use a mechanical impact to transfer ink onto the paper, such as dot matrix printers. Nonimpact printers, on the other hand, do not use any mechanical impact and instead use technologies like laser or inkjet to create images on the paper.

A laser printer would be the best choice for printing large quantities of mail-merged letters. Laser printers are known for their high-speed printing capabilities and can handle large print jobs efficiently. They use a laser beam to create an image on a drum, which is then transferred onto the paper. This results in crisp and professional-looking prints. Additionally, laser printers have a lower cost per page compared to inkjet printers, making them more cost-effective for large print volumes.

A plotter is the most suitable output device to print an architectural drawing on a very large paper. Unlike laser printers, inkjet printers, or dot-matrix printers, plotters are specifically designed to print large-scale drawings with high precision and accuracy. They use a pen or a set of pens to create continuous lines on the paper, resulting in detailed and clear prints. This makes them ideal for printing architectural drawings, which often require large paper sizes and intricate details.