A scanner takes a printed picture, drawing or document and converts it into an image file.
Speakers send information from the computer to users and allow them to hear sound and noise.
A pen drive is small enough to be carried in one’s pocket.
An SMPS is used to supply the electric current to all parts of a computer.
A heat sink is required to cool the CPU and graphics card.
State whether True or False:
You can scan only the printed pictures using a scanner. (FALSE) (We can also scan documents, drawings)
Microphone is an input device. (TRUE)
The output you get on the monitor is called hard copy. (FALSE) (It’s called soft copy)
A graphic card is required to get better graphics of computer game. (TRUE)
Internal modem, sound card, and video card are usually connected to the PCI. (TRUE)
Choose the correct option:
Which one is not an external hardware?
Find the odd one out:
Which of the following is/are a category of peripherals?
d. All of these
This device controls the working of a computer.
This peripheral is used to show the information stored on a computer on a large screen so that it can be viewed by an audience.
d. None of these
Answer the following:
What are the two categories of computer hardware? Explain them.
The two categories of computer hardware are:
a. External hardware
b. Internal hardware
The hardware components that are connected to the computer externally are collectively referred to as external hardware.
The hardware components which are fixed inside the CPU cabinet are termed as internal hardware.
Give two examples each of the two categories of computer hardware with their names.
External hardware: keyboard, mouse, projector, scanner.
Internal hardware: motherboard, CPU, RAM, ROM.
What is a peripheral? What are its three categories?
The external hardware devices are also called peripherals.
It is divided into three categories:
a. Input devices: mouse, keyboard.
b. Output devices: monitor, printer.
c. Storage devices: flash drive, memory card.
What is the difference between a printer and a scanner?
A printer produces hard copy, whereas a scanner produces soft copy.
A printer is an output device, whereas a scanner is an input device.
What is flash drive? Which port is used to connect it to a computer?
A flash drive is an easy to use storage device, which is small enough to be carried in one’s pocket. It is connected to the USB port of the computer for reading and writing data.
Fill in the blanks:
A computer comprises of two major components – hardware and software.
CPU is often called the brain of the computer.
RAM is a volatile memory unit.
A hard disk is the most common example of disk drive with high storage capacity.
A hard disk drive consists of a set of platters.
A scanner can be connected to a computer through a USB port.
A monitor is also called a VDU.
The size of the monitor is measured diagonally.
The two main types of VDUs are CRT and LCD.
The output viewed on a VDU is called a soft copy.
The printed output is called hard copy.
Speakers are connected to the audio port or USB port.
The two types of modems are internal modem and external modem.
A sound card converts digital data to sound and vice-versa.
A video card is used to generate video output to a display screen.
A video card is connected to the motherboard through an AGP or a PCI connection.
A printer is connected to a computer using a USB port or a Wi-Fi connection.
A pen drive is also called a thumb drive or flash drive or USB drive.
A keyboard and mouse are the most common input devices.
Answer the following:
What is a motherboard?
A motherboard is a printed circuit board secured with screws inside the CPU cabinet. It contains all the necessary electronic devices and circuits, data and communication buses, interfaces and the power supply.
What is RAM?
RAM is a temporary storage unit of the computer, which is used to hold data and instructions.
What is ROM?
ROM is a non-volatile memory unit that holds data permanently and does not lose its content even when the power is turned off.
What is a PCI?
PCI is an interface to connect hardware components to the CPU and the hard disk drive.
What is a modem?
A modem is a hardware device that connects a computer to a communication line, such as an Internet cable.
What are ports used for?
Ports are meant for connecting specific external input and output devices.
What is a memory card?
A memory card is a small card that is inserted and used in many small portable devices.
AGP – Accelerated Graphics Port
CD – Compact Disk
CPU – Central Processing Unit
CRT – Cathode Ray Tube
DVD – Digital Versatile Disk or Digital Video Disk