Unit 2: Lesson 1: Introduction to Computers

What was the first electronic general-purpose computer?

• Apple II

• IBM PC

• ENIAC

• UNIVAC

Answer explanation

The first electronic general-purpose computer was ENIAC.

Which of the following statements is true about ENIAC?

• It was introduced in the 1970s.

• It occupied 1,800 square feet and weighed nearly 30 tons.

• It was the first personal computer.

• It was primarily used for entertainment.

Answer explanation

The statement 'It occupied 1,800 square feet and weighed nearly 30 tons' is true about ENIAC.

Which era saw the introduction of Apple II and IBM PC?

• 1940s

• 1950s

• 1960s

• 1970s-1980s

Answer explanation

The era that saw the introduction of Apple II and IBM PC was the 1970s-1980s.

What are some characteristics of modern computers?

• They are large and slow.

• They have unimaginable processing speeds and expanded functionalities.

• They are only used for calculations.

• They are less user-friendly than early computers.

Answer explanation

They have unimaginable processing speeds and expanded functionalities.

Which of the following is NOT a use of computers in today's world?

• Education

• Healthcare

• Entertainment

• Agriculture

Answer explanation

Agriculture is NOT a use of computers in today's world, as it is not listed as a common application of technology in the given options.

What is an example of the input function of a computer?

• Typing on a keyboard

• Displaying a video

• Printing a document

• Saving a file

Answer explanation

Typing on a keyboard is an example of the input function of a computer, as it allows users to input data directly into the system.

Which of the following is a function of input in a computer system?

• Displaying text on the screen

• Saving data on hard drives

• Conversion of keystrokes into digital data

• Analyzing vast data for accurate predictions

Answer explanation

The correct function of input in a computer system is the conversion of keystrokes into digital data.

What is the primary role of supercomputers in weather forecasting?

• Displaying text on the screen

• Analyzing vast data for accurate predictions

• Saving data on hard drives

• Ensuring immediate and smooth responses to user commands

Answer explanation

The primary role of supercomputers in weather forecasting is analyzing vast data for accurate predictions.

Which principle of human-computer interaction emphasizes the importance of intuitive interfaces?

• User-Friendly Design

• Graphical User Interfaces (GUIs)

• User Input and Computer Response

• Complex Calculations

Answer explanation

The principle of human-computer interaction that emphasizes the importance of intuitive interfaces is User-Friendly Design.

What is a key characteristic of supercomputers compared to regular computers?

• Displaying text on the screen

• Exponentially greater processing power

• Conversion of keystrokes into digital data

• Ensuring immediate and smooth responses to user commands

Answer explanation

Supercomputers are characterized by exponentially greater processing power compared to regular computers, allowing them to handle complex calculations and tasks at a much faster rate.