Chapter 5 Introduction to computer hardware and software
Answer the following questions
a. Define computer hardware and software.
Ans: Computer hardware is the physical components of a computer that can be seen and touched.
Software is a collection of instructions that enables the user to interact with the computer hardware or perform some specific task.
b. Name any four input devices and explain them in short.
Ans: Four input devices are: Keyboard, Mouse, Joystick, and lightpen.
Keyboard>> A keyboard is the basic input device of a computer there are many keys on the keyboard with the help of these keys we can give commands to the computer.
Mouse: The mouse is a popular handheld pointing input device for computers.
Joystick >>> A joystick is also a pointing device that is used to move the cursor and mostly it is used for playing computer games.
Light pen>>> Light pen is a pointing device similar to a pen. It is used to select a displayed menu item or draw pictures on the monitor screen.
c. What is computer hardware? Name any four computer hardware that you know.
Ans: Computer hardware is the physical components of the computer that can be seen and touched. Example: Keyboard, Mouse, Scanner, Printer.
Answer the following questions
a. Define computer hardware and software.
Ans: Computer hardware is the physical components of a computer that can be seen and touched.
Software is a collection of instructions that enables the user to interact with the computer hardware or perform some specific task.
b. Name any four input devices and explain them in short.
Ans: Four input devices are: Keyboard, Mouse, Joystick, and lightpen.
Keyboard>> A keyboard is the basic input device of a computer there are many keys on the keyboard with the help of these keys we can give commands to the computer.
Mouse: The mouse is a popular handheld pointing input device for computers.
Joystick >>> A joystick is also a pointing device that is used to move the cursor and mostly it is used for playing computer games.
Light pen>>> Light pen is a pointing device similar to a pen. It is used to select a displayed menu item or draw pictures on the monitor screen.
c. What is computer hardware? Name any four computer hardware that you know.
Ans: Computer hardware is the physical components of the computer that can be seen and touched. Example: Keyboard, Mouse, Scanner, Printer.
d. Define the term printer.
Ans: The printer is a popular hardcopy output device used to display the results on paper. There are two types of printers Impact printers and Non-Impact printers.
e. What is Impact and Non-Impact printers?
Impact printer>>> Impact printer prints the characters by striking an inked ribbon against the paper or sheet with the hammer-like mechanism. Examples are dot matrix printers and daisy wheel printers.
Non-Impact printers>>> A non-Impact printer does not strike the characters against ribbon or paper to print and produce low noise while printing than an Impact printer. Example Inkjet printer.
f. Name any two impact and non-impact printers?
Ans: Impact printer>>>Dot matrix printer, daisy wheel printers.
Non-impact printer >>> Inkjet printer, laser printer.
g. What is the use of a plotter?
Ans: A plotter is a printer designed for printing graphics and large-scale images.
h. What is processing hardware?
Ans: The hardware that is used to do all types of processing activities in the computer system is called processing hardware. Eg. CPU.
i. Define memory unit, control unit, and ALU.
Memory unit>>> Memory unit is the main section of CPU it is used to store instructions, data, and intermediate results. It is also used to supply information to other units of the computer when needed.
Control Unit >>> It is another part of the CPU that controls the operations of all parts of the computer but does not carry out any actual data processing operation.
ALU>>> The ALU consists of two sections, the arithmetic section which is used to perform arithmetic operations such as addition, multiplication, etc, and the logical section which is used to perform logic operations such as comparing data.
j. Name any two storage hardware and explain them in short.
Ans: Any two storage hardware are:
Hard disk>>> Hard disk is one of the largest data storage devices in a computer. The operating system, software programs, and most other files can be stored on the hard disk.
Memory Card>>> Memory card is a small-sized but large storage capacity device basically used to store photos, videos, or other data on electronic devices.
k. What is system software? Name any two system software.
Ans: System software is the main software of a computer that helps to activate the computer system and provides the operating environment for other applications software. Operating systems and Language translators are two types of system software.
l. Define an operating system with examples.
Ans: An operating system is system software that manages computer hardware, and software resources, and provides common services for computer programs. Examples: Windows, LINUX, UNIX, etc.
m. What is a language translator? Name any three-language translator.
Ans: A language translator is a program that translates a set of codes written in one programming language into a functional equivalent to the code in another programming language.
Compiler, Interpreter, and Assembler are the types of a language translators.
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