The Characteristics of Computer is one of the most fundamental topics in Computer Awareness. Questions based on the features and capabilities of computers are frequently asked in SSC, JKSSB, Banking, Railway, Defence, Police, State PSC, UPSC, and other competitive examinations.
What are the Characteristics of a Computer?
A computer is an electronic machine capable of processing data quickly, accurately, and efficiently. The major characteristics of a computer explain why it is widely used in education, banking, healthcare, business, research, communication, and various government sectors.
The five main characteristics of a computer are:
- Speed
- Accuracy
- Diligence
- Versatility
- Storage
1. Speed
Speed is one of the most important characteristics of a computer. A computer can perform millions or even billions of calculations within a fraction of a second, making it much faster than humans.
According to the book, the speed of a computer is measured in Hertz (Hz).
A computer performs operations in extremely small units of time:
- Microsecond (10⁻⁶ second)
- Nanosecond (10⁻⁹ second)
- Picosecond (10⁻¹² second)
Because of its high processing speed, computers are widely used in banking, scientific research, online transactions, weather forecasting, and competitive examination systems.
2. Accuracy
Another important characteristic of a computer is its accuracy. A computer produces highly accurate results when the correct instructions and data are provided.
However, the computer follows the principle of:
GIGO (Garbage In, Garbage Out)
This means:
- If the input data is correct, the output will also be correct.
- If incorrect data is entered, the computer will produce incorrect results.
A computer itself does not make mistakes during calculations; errors generally occur because of incorrect input or instructions.
3. Diligence
Unlike humans, a computer never becomes tired or bored. This quality is known as diligence.
A computer can:
- Work continuously for long hours.
- Perform repetitive tasks without losing speed or accuracy.
- Maintain the same level of efficiency throughout its operation.
This characteristic makes computers highly suitable for industries, banks, offices, and scientific laboratories where continuous processing is required.
4. Versatility
A computer is a versatile machine, meaning it can perform many different types of tasks without changing its efficiency.
For example, the same computer can be used for:
- Typing documents
- Browsing the internet
- Playing games
- Watching videos
- Online banking
- Programming
- Graphic designing
- Data analysis
Its ability to perform multiple tasks with the same speed makes it one of the most useful electronic devices.
5. Storage
A computer has a large storage capacity. It can store huge amounts of data, information, programs, images, videos, and documents.
Stored information can be retrieved whenever required, making computers ideal for maintaining records in schools, colleges, hospitals, government departments, and businesses.
Large storage capacity is one of the primary reasons why computers are widely used for data management.
Quick Revision Table
| Characteristic | Description |
|---|---|
| Speed | Performs calculations in Microseconds, Nanoseconds, and Picoseconds. Speed is measured in Hertz (Hz). |
| Accuracy | Produces accurate results and follows the GIGO principle. |
| Diligence | Works continuously without tiredness or loss of efficiency. |
| Versatility | Performs many different tasks with the same speed and efficiency. |
| Storage | Stores a large volume of data and information for future use. |
Important Facts for Competitive Exams
- The speed of a computer is measured in Hertz (Hz).
- A computer performs operations in Microseconds, Nanoseconds, and Picoseconds.
- GIGO stands for Garbage In, Garbage Out.
- A computer becomes inaccurate only when incorrect input is provided.
- Diligence means the computer can work continuously without fatigue.
- Versatility means a computer can perform different kinds of tasks efficiently.
- One of the major strengths of a computer is its large storage capacity.
- The five major characteristics of a computer are Speed, Accuracy, Diligence, Versatility, and Storage.
Conclusion
The Characteristics of a Computer form the foundation of Computer Awareness. A computer is valued for its high speed, accuracy, diligence, versatility, and storage capacity, making it an indispensable tool in modern life. Candidates preparing for SSC, UPSC, Banking, Railway, Defence, JKSSB, Police, State PSC, and other competitive examinations should thoroughly revise these characteristics.
Important MCQ’S on Characteristics of Computer for all Competitive Exams
Q1. Which of the following statements are correct regarding the characteristics of a computer?
- A computer can perform millions of calculations in a very short time.
- A computer always produces correct results irrespective of the input.
- A computer can perform different types of tasks efficiently.
A) 1 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2 and 3
✅ Answer: B
Q2. Which one of the following is NOT considered a characteristic of a computer?
A) Accuracy
B) Diligence
C) Intelligence
D) Versatility
✅ Answer: C
Q3. Which of the following statements are correct regarding the speed of a computer?
- Speed is one of the primary characteristics of a computer.
- Computer speed is measured in Hertz (Hz).
- Computers perform operations in microseconds, nanoseconds, and picoseconds.
A) 1 only
B) 1 and 2 only
C) 2 and 3 only
D) 1, 2 and 3
✅ Answer: D
Q4. Arrange the following units of time from largest to smallest.
- Microsecond
- Nanosecond
- Picosecond
A) 1 → 2 → 3
B) 2 → 1 → 3
C) 3 → 2 → 1
D) 2 → 3 → 1
✅ Answer: A
Q5. The ability of a computer to produce correct results depends mainly on:
A) Internet speed
B) Correct input and instructions
C) Processor brand
D) Monitor quality
✅ Answer: B
Q6. Which of the following statements are correct regarding the GIGO principle?
- GIGO stands for Garbage In, Garbage Out.
- Incorrect input leads to incorrect output.
- The computer itself intentionally changes the output.
A) 1 only
B) 1 and 2 only
C) 2 and 3 only
D) 1, 2 and 3
✅ Answer: B
Q7. Which characteristic enables a computer to work continuously without becoming tired?
A) Speed
B) Accuracy
C) Diligence
D) Storage
✅ Answer: C
Q8. Which of the following statements are correct regarding diligence?
- A computer can work continuously for long hours.
- Its efficiency decreases after prolonged use.
- It can perform repetitive tasks without losing accuracy.
A) 1 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2 and 3
✅ Answer: B
Q9. Which characteristic of a computer refers to its ability to perform different kinds of tasks?
A) Storage
B) Accuracy
C) Versatility
D) Reliability
✅ Answer: C
Q10. Which of the following activities demonstrate the versatility of a computer?
- Online banking
- Document typing
- Internet browsing
A) 1 only
B) 1 and 2 only
C) 2 and 3 only
D) 1, 2 and 3
✅ Answer: D
Q11. Which characteristic allows a computer to store a large amount of information for future use?
A) Accuracy
B) Diligence
C) Storage
D) Speed
✅ Answer: C
Q12. Which of the following statements are correct regarding storage?
- A computer can store large amounts of data.
- Stored data can be retrieved whenever required.
- Storage is one of the basic characteristics of a computer.
A) 1 only
B) 1 and 2 only
C) 2 and 3 only
D) 1, 2 and 3
✅ Answer: D
Q13. Which one of the following correctly matches the characteristic with its description?
A) Accuracy — Ability to perform different tasks
B) Diligence — Ability to work continuously without fatigue
C) Storage — Ability to process billions of calculations
D) Speed — Ability to permanently remember instructions
✅ Answer: B
Q14. Which of the following statements are correct?
- A computer becomes tired after continuous work.
- A computer follows the GIGO principle.
- Speed and accuracy are important characteristics of a computer.
A) 1 only
B) 2 only
C) 2 and 3 only
D) 1, 2 and 3
✅ Answer: C
Q15. A computer’s accuracy is primarily affected by:
A) Power supply
B) Incorrect input data
C) Screen resolution
D) Printer speed
✅ Answer: B
Q16. Which one of the following is measured in Hertz (Hz)?
A) Computer storage
B) Computer speed
C) Computer memory
D) Computer output
✅ Answer: B
Q17. Which of the following statements are correct?
- Speed enables a computer to perform millions of operations quickly.
- Versatility enables a computer to perform different tasks.
- Diligence allows a computer to work without becoming tired.
A) 1 only
B) 1 and 2 only
C) 2 and 3 only
D) 1, 2 and 3
✅ Answer: D
Q18. Which of the following characteristics is best illustrated by a computer performing banking, education, research, and entertainment tasks?
A) Accuracy
B) Versatility
C) Storage
D) Speed
✅ Answer: B
Q19. Which one of the following sets correctly lists the five major characteristics of a computer?
A) Speed, Accuracy, Diligence, Versatility, Storage
B) Speed, Intelligence, Memory, Storage, Networking
C) Accuracy, Programming, Speed, Internet, Output
D) Diligence, Hardware, Software, Storage, Memory
✅ Answer: A
Q20. Which of the following statements are correct regarding the characteristics of a computer?
- A computer performs operations with high speed and accuracy.
- It can store large amounts of information.
- It can perform repetitive and different tasks efficiently without fatigue.
A) 1 only
B) 1 and 2 only
C) 2 and 3 only
D) 1, 2 and 3
✅ Answer: D
PYQ’S on Characteristics of Computer
Q1. [NVS Junior Secretariat Assistant (LDC) 2017]
The characteristic of a computer which specifies constant and earnest effort without getting tired is called:
A) Speed
B) Automation
C) Diligence
D) Storage
✅ Answer: C
Q2. [MP CPCT Official Paper]
Which characteristic of a computer refers to performing millions of calculations with the same consistency and accuracy?
A) Accuracy
B) Versatility
C) Diligence
D) Reliability
✅ Answer: C
Q3. [SSC Pattern PYQ]
GIGO stands for:
A) Good Input Good Output
B) Garbage In Garbage Out
C) Great Input Great Output
D) General Input General Output
✅ Answer: B
Q4. [Banking Exam Pattern]
Which characteristic enables a computer to perform operations at an extremely high speed?
A) Diligence
B) Speed
C) Storage
D) Versatility
✅ Answer: B
Q5. [SSC CHSL Pattern]
The accuracy of a computer mainly depends upon:
A) Processor speed
B) Correct input and instructions
C) RAM size
D) Internet connection
✅ Answer: B
Q6. [RRB Pattern]
Which characteristic allows a computer to work continuously without fatigue?
A) Accuracy
B) Storage
C) Diligence
D) Automation
✅ Answer: C
Q7. [SSC Pattern]
If incorrect data is entered into a computer, the resulting incorrect output is explained by:
A) BIOS
B) GIGO
C) GUI
D) ASCII
✅ Answer: B
Q8. [IBPS Pattern]
The ability of a computer to perform different kinds of tasks efficiently is known as:
A) Accuracy
B) Versatility
C) Storage
D) Reliability
✅ Answer: B
Q9. [SSC CGL Pattern]
Which of the following is NOT a characteristic of a computer?
A) Speed
B) Intelligence
C) Accuracy
D) Diligence
✅ Answer: B
Q10. [Railway Pattern]
The ability of a computer to store large amounts of information is known as:
A) Automation
B) Storage
C) Speed
D) Diligence
✅ Answer: B
