A. Tick (✓) the correct option. 1. The speed of a computer is measured in (a) Nanoseconds (b) Megahertz (c) G = gigahertz (d) K = kilometres 2. A computer is an electronic device (a) Which takes data (b) Which takes instructions (c) Which gives results (d) All of the above 3. Which of the following devices can be called a computer? (a) Desktop (b) Projector (c) Calculator (d) Tablet 4. The execution of instructions is called (a) Data (b) Instruction (c) Data processing (d) Output B. Fill in the blanks. 1. The data which goes into a computer is termed as ______. 2. The computer performs action(s) on the data and this is known as ______. 3. The result that comes out after processing the input data is termed as ______. 4. A set of computer instructions is called ______. C. Write 'T' for true and 'F' for false against each of the following statements. 1. The data that comes out after processing the input data is termed as the output. 2. The phenomenon of right output due to wrong input of instructions or data is termed as Garbage In Garbage Out (GIGO). 3. Computers can perform calculations at a very high speed with 100% accuracy. 4. A computer depends upon a calculator for instructions. D. Short answer type questions. 1. What is a computer? 2. Write any two limitations of the computer. 3. Write any two differences between the computer and human beings. 4. Explain the term GIGO.
Answer (1)
A. Tick (✓) the correct option.
The speed of a computer is measured in
(a) Nanoseconds
(b) Megahertz
✓ (c) Gigahertz
(d) Kilometres
A computer is an electronic device
(a) Which takes data
(b) Which takes instructions
(c) Which gives results
✓ (d) All of the above
Which of the following devices can be called a computer?
(a) Desktop
(b) Projector
(c) Calculator
✓ (d) Tablet
The execution of instructions is called
(a) Data
(b) Instruction
✓ (c) Data processing
(d) Output
B. Fill in the blanks.
The data which goes into a computer is termed as input .
The computer performs action(s) on the data and this is known as processing .
The result that comes out after processing the input data is termed as output .
A set of computer instructions is called a program .
C. Write 'T' for true and 'F' for false against each of the following statements.
T - The data that comes out after processing the input data is termed as the output.
T - The phenomenon of right output due to wrong input of instructions or data is termed as Garbage In Garbage Out (GIGO).
T - Computers can perform calculations at a very high speed with 100% accuracy.
F - A computer depends upon a calculator for instructions.
D. Short answer type questions.
What is a computer?
A computer is an electronic device that processes data according to a set of instructions, called a program. It can store, retrieve, and process data to perform a variety of tasks such as calculations, document creation, and data analysis.
Write any two limitations of the computer.
Computers cannot think or make decisions on their own; they entirely depend on instructions from humans.
Computers require a constant power supply to function, making them less effective during power outages.
Write any two differences between the computer and human beings.
Computers process data very rapidly and with high accuracy, whereas humans can make errors.
Humans have creativity and emotion, while computers operate based solely on logic and do not understand context in the way humans do.
Explain the term GIGO.
GIGO stands for "Garbage In, Garbage Out." It means that if incorrect or poor-quality data is entered into a computer, the resulting output will also be incorrect or flawed. This emphasizes the importance of providing accurate and reliable input to get meaningful results from a computer.
