Fundamentals of Computer

Computers are powerful electronic machines that help us solve problems, organise information, and communicate quickly. In all computer-based activities, there is evident organisation and order. Learning the basics of a computer will make us aware of how various parts relate well to each other.

The principle of a basic working cycle of a computer is referred to as the IPO cycle:

Input → Process → Output → Storage

Let us discuss the main ideas in an organised and comprehensible manner.

IPO

Types of Computers

Personal Computers (PCs)

PCs are made to be used by an individual at a time.

They include:

Desktop computers

These are stored on a table and are mostly utilised in schools and offices.

Laptops

  • These are handheld computers and are easy to transport around.
  • Studying, typing documents, internet browsing and presentations are done using personal computers.

Tablet Devices

  • Tablets are compact and portable computers containing touch screens.
  • They are portable and can be easily operated.

Tablets are mainly used for:

  • Reading e-books
  • Watching videos
  • Browsing websites
  • Playing learning games

They are very popular among students, as they are convenient to carry and easy to manage.

Supercomputers

  • Supercomputers are massive and mighty computers.
  • In a second, they can calculate billions of things.

They are used for:

  • Weather forecasting
  • Space research
  • Medical research
  • Scientists and researchers mostly use them.

Smartphones

  • Smartphones are mini computers.
  • They can do numerous activities, such as sending messages, using applications, browsing and capturing pictures.
  • The smartphone forms one of the most frequently used computers these days.

These types are constructed based on the degree of performance needed.

Hardware – The Physical Framework

'Hardware' is a term which ushers in all the physical parts that constitute a computer system.

These elements are supposed to be classified into four groups:

Input Devices

  • Included in supplying data to the computer.
  • Examples: keyboard, mouse, scanner, microphone.

Processing Unit

The computer's CPU (central processing unit) does calculations and control operations.

It consists of:

ALU (Arithmetic Logic Unit) – Performs arithmetic and logic comparisons.

ALU

Control Unit (CU) – Control of all computer activities.

CU

Output Devices

  • Present the processing outcomes.
  • Examples: printer, speakers, monitor.

Storage Devices

  • Data and program storage.
  • Examples: hard disc, pen drive, memory card.

Hardware is the component that provides the structure through which the system operates.

Software – The Instruction System

Software is a set of programs that instruct the hardware on how to do things. Hardware cannot do anything significant without software.

The software may be categorised as follows:

System Software

Cares about the general operations of the computer. It manages memory, files and devices.

Application Software

  • Targeted to particular tasks like document generation, data analysis, drawing and browsing.
  • Software translates the user commands into instructions that are executed by the hardware. 

Working of I/O System

The operation of the computer could be described in four phases:

Input → Process → Output → Storage

  • Input – This is the information that is supplied through input devices.
  • CPU – processes the data based on the instructions.
  • Output - Results are presented or printed.
  • Storage – Information is stored to be used later.

This is a systematised process that makes it accurate and efficient.

QUIZ FOR FUNDAMENTALS OF COMPUTERS

1. What is the most appropriate definition of a laptop?

A) Gadget that is utilised just to play games.
B) Portable computer that is convenient to carry around.
C) A huge computer capable of computing billions of operations a second.
D) An object that is used to just view videos.

Answer: B) Portable computer that is convenient to carry around.

2. The central processing unit (CPU) can be referred to as the brain of the computer. What would happen in case the CPU were not present in a computer?

A) The computer would work at a slower rate.
B) The computer would not be able to do anything at all.
C) More data would be stored in the computer.
D) The computer would clean itself automatically.

Answer: B) The computer would not be able to do anything at all.

3. Assuming that you have been requested to store information in a computer permanently, what would you store it on?

A) Keyboard
B) Monitor
C) storage devices
D) Speaker

Answer: C) storage devices

4. Consider a case where you are working on a supercomputer in space research. Why is this machine any different from your normal computer at home?

A) It's smaller and lighter.
B) It is able to compute billions of things within a second.
C) It is applied in word processing only.
D) It has the same pace as your laptop.

Answer: B) It is able to compute billions of things within a second.

5. Where does the computer do all the calculations and logic comparisons to make work efficiently?

A) Control Unit
B) ALU (Arithmetic Logic Unit)
C) Input Devices
D) Storage Devices

Answer: B) ALU (Arithmetic Logic Unit)

6. Suppose you need to make pictures and write documents in your school project. Which is the best device to use because it is best to do tasks rapidly and carry it anywhere?

A) Smartphone
B) Tablet
C) Supercomputer
D) Desktop Computer

Answer: B) Tablet

7. Consider the case when you are in the office and you have to store data temporarily while you are using the computer. What kind of memory is utilised here?

A) Primary Memory
B) Secondary Memory
C) Control Unit
D) Output Device

Answer: A) Primary Memory

8. You have a scanner and want to email the digital copies of your documents to your friend. What device assists you in transferring the data to the computer?

A) Input devices such as a mouse or keyboard.
B) Processing Unit (CPU)
C) Storage Devices
D) Scanner (an input device)

Answer: D) Scanner (an input device)

9. What is a software category that is mostly utilised to complete certain tasks like presentations or document generation?

A) System Software
B) Application Software
C) Hardware
D) Input Devices

Answer: B) Application Software.

10. In case the computer is in the IPO cycle (Input-Process-Output-Storage), what happens when the input process is completed?

A) The findings are saved to be used later.
B) The result is displayed on the screen.
C) The data is lost.
D) The information is printed on the spot.

Answer: B) The result is displayed on the screen.