MCQ Test: Input and Output Devices - 1 - JKSSB Patwari MCQ

A printer is an output device.

• The printer is a device through which prints of any document is prepared or processed and all the printed information of the computer are obtained.
• Laser printer is the fastest printer in the world.
• The first electronic printer was the EP-101, was introduced in 1968.
• It was invented by Japanese company Epson.

Important Points 

• Printers can be divided into two:
  • Impact printer.
  • Non-impact printer.
• In impact printers, printing heads touch on the paper.
• Examples of impact printers are:
  • Line printer.
  • Chain printer.
  • Dot-matrix printer.
  • Character printer.
  • Drum printer.
  • Daisy wheel printer.
• Examples of non-impact printers are:
  • Laser printer.
  • Inkjet printer.

Important Points

• MICR stands for Magnetic Ink Card Reader.
• MICR input device is generally used in banks.
• In banks, there are a large number of Cheques need to Processed daily.
• On cheques, the bank code number and cheque number have been printed.
• And the ink through which it is Prints is a special type of ink containing magnetic particles.
• MICR is used to read that ink.

A peripheral device is an external or internal component that directly connects to a computer but does not work for the computer's primary function, like computing. It helps end-users to enhance the functionalities of a computer.
examples of peripherals are expansion cards, memory cards, graphics cards, scanners, microphones, speakers, webcams, digital cameras, etc.

ROM is both static and non-volatile.

Key Points

• ROM is Read-Only Memory.
• The ROM is non-volatile and retains its information even after the power is turned off. 

The Hard copy is the output that is printed by the computer.

Important Points

• A joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is controlling.
• Joysticks are often used to control video games and cannot be used to work in MS Office.

Key Points

• A joystick is an input device that controls a character or machine in a computer program, such as a plane in a flight simulator. They look similar to the control device you would find on an arcade game, but nearly always include extra buttons for additional functionality. The picture shows the Logitech Freedom 2.4, an example of a joystick.
• The first joystick was invented at the U.S. Naval Research Laboratory by C. B. Mirick and patented in 1926. It was a two-axis electronic joystick, similar to the joysticks in use today, and was original designed for remotely piloted aircraft. 
• Today, most computer joysticks connect to the computer using a USB port. Below is a listing of all of the type of ports that have accepted a joystick:
  • Bluetooth
  • Game port
  • Serial Port
  • USB

A workstation is a special computer designed for technical or scientific applications. Intended primarily to be used by one person at a time, they are commonly connected to a local area network and run multi-user operating systems.

Digital Camera

• It is a camera that captures photographs in flash memory.
• The basis for digital camera image sensors is metal-oxide-semiconductor technology.
• Steven Sasson invented the world's first digital camera in 1975.

Flash Memory

• It is a type of nonvolatile memory that erases data in units called blocks and rewrites data at the byte level.
• It is widely used for storage and data transfers in consumer devices, industrial applications.
• Flash memory is a non-volatile computer storage chip,
• It is made up of EEPROM.
• EEPROM is the acronym of electrically erasable programmable read-only memory,
• EEPROM is a Programmable ROM that can be erased and reprogrammed using an electrical charge.
• It was first was developed by George Perlegos.
• It allows the user to update the computer BIOS without having to open the computer or remove any chips.
• It organized as arrays of floating-gate transistors.
• USB flash drive, Memory cards are examples of flash memory storage.
• BIOS is stored in a Flash memory chip.

Network Card is the hardware device used for networking.

• It is a circuit board located near the USB port at the back.
• Network cards work as both input as well and output devices.
• It is also known as a Local area Network card, Ethernet card, or Network card Only. It is also known as an interface controller.
• It can be in the form of an Onboard that is present in the system itself or can be offboarded like an Expansion slot.
• it usually is on the back of the computer near the bottom near the PCI slot.
• On laptops, the Network card is mostly integrated into the Motherboard.
• If a Network card is not present on the computer or laptop it must have a wireless network Connection.

Functions of the Network Interface Card

• A network card functions as a middle person between the computer and the data network. 
• Ex: when we log in to a website the PC passes information to the Network card which converts it into an electrical signal and then we get a web page.
• It works like a Translator, which converts data into a digital signal.
• It communicates over a long distance.

Keyboard in not an output device, it is rather an input device.

Out of the given options the scanner is an input device. This is because scanner is used to give input to the computer in the form of the image of the document that is being scanned. Rest of the devices show the final result which is called the output, after processing the input.

MIDI is a technical standard that describes a communications protocol, digital interface and electrical connectors and allows a wide variety of electronic musical instruments, computers and other related music and audio devices to connect and communicate with one another.

BIOS stands for basic input output system. It is the program which turns on every other feature of the computer when its power is switched on.

Among the options, only laser printer is an example of a non-impact printer.
Laser printer is the fastest computer printer.

• The laser printer is the most effective and fine printing technique among all computer printers.
• Laser printers are costlier compared to other computer printers.
• A laser printer uses a laser beam on behalf of the photograph in making the sketch of the graphics.
• Around 13,000 lines can be printed out in every minute using a laser printer.
• Laser printers are also called page printers as they print one page at a time.

Keyboard is an input device.

• KeyboaThe keyboardmilar to an electric typewriter.
• Keyboard only sends data to a computer and does not receive any information from it.
• A standard keyboard has 104 keys.
• It composed of buttons used to create letters, numbers, and symbols, and perform additional functions.

• Keys on keyboard are of mainly three types:
  • Alphanumeric keys: Letters and numbers.
  • Punctuation keys: comma, period, semicolon, etc.
  • Special keys: Function keys, arrow keys, caps lock key, etc.

Key Points 

• There are 12 function keys on a keyboard.
  • Function keys are present on the topmost row of the keyboard.
  • Different function keys on the keyboard are F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11 and F12.
  • Function keys have different functions for different programs.
• Most keyboards use the QWERTY layout.
• Space bar is the largest key on the keyboard.
• Escape key is the key placed at the top left corner of the keyboard.

In computing, a stylus (or stylus pen) is a small pen-shaped instrument that is used to input commands to a computer screen, mobile device or graphics tablet.

Among the options, only Dot-matrix plotter is NOT a type of plotter.

• A plotter is an output device.
• A plotter is a computer hardware device that is used for printing vector graphics.
• Plotters are much like a printer.
• Plotters can produce high-quality output on large sheets.
• Using plotters, users can draw the same pattern thousands of times without any image degradation.
• The speed of producing output in a plotter is high.
• The world's first plotter was invented in 1953 by Remington-Rand.

Key Points 

• Important types of plotters are:
  • Flatbed plotter.
  • Drum plotter.
  • Cutting Plotter.
  • Inkjet Plotter.
  • Electrostatic Plotters.
• Dot-matrix printing a computer printing process in which ink is applied to a surface using a relatively low-resolution dot matrix for layout.

A hard disk is divided into tracks which is further subdivided into sectors.

The correct answer is option 4, i.e., Closer the pixels

• When we increase the resolution of a monitor the pixels come closer to provide sharp and bright images.
• A pixel is the smallest unit of a digital image or graphic that can be displayed and represented on a digital display device.
• A pixel is the basic logical unit in digital graphics. Pixels are combined to form a complete image, video, text, or any visible thing on a computer display.
• The pixel resolution spread also determines the quality of display; more pixels per inch of monitor screen yields better image results.
• For example, a computer with a display resolution of 1280 x 768 will produce a maximum of 98,3040 pixels on a display screen. Each pixel has a unique logical address, a size of eight bits or more, and, in most high-end display devices, the ability to project millions of different colors.

A touchscreen is a display device that allows users to interact directly with the screen by touching it. It is commonly used in smartphones, tablets, and some computers as a pointing device.