Computer Science Concepts and Input Devices

What is the primary function of a CPU in a computer?

• To execute instructions and perform calculations for running programs and processes.

• To provide internet connectivity

• To store files and documents

• To display images and videos on the screen

Name two examples of input devices.

• Keyboard, Mouse

• Printer

• Scanner

• Monitor

What is the difference between hardware and software?

• Hardware is virtual, while software is physical.

• Hardware is intangible, while software is tangible.

• Hardware is the physical components of a computer system, while software is the programs and applications that run on the hardware.

• Hardware is temporary, while software is permanent.

Explain the concept of binary code.

• Binary code is a system of representing data using letters A and B.

• Binary code is a system of representing data using only odd numbers.

• Binary code is a system of representing data using only two digits: 0 and 1.

• Binary code uses three digits: 0, 1, and 2.

What is the purpose of a keyboard as an input device?

• To scan and print documents

• To control the volume of a computer or electronic device

• To input text, numbers, and commands into a computer or electronic device.

• To display images and videos on a computer screen

What is the role of a mouse in computer input?

• The role of a mouse in computer input is to print documents

• The role of a mouse in computer input is to scan images

• The role of a mouse in computer input is to provide a way for the user to interact with the graphical user interface by moving the cursor and clicking on icons, buttons, and other elements.

• The role of a mouse in computer input is to provide audio output

Define RAM and its function in a computer system.

• RAM is a type of computer peripheral used for printing documents

• RAM is a type of computer memory that stores data and machine code currently being used by the CPU.

• RAM is a type of computer monitor that displays images and videos

• RAM is a type of computer software used for editing photos and videos

What are the different types of input devices used in a computer?

• DVD drives, webcams, microphones

• USB drives, external hard drives, headphones

• Keyboards, mice, touchpads, scanners, digital cameras, microphones, and joysticks

• Printers, monitors, speakers

Explain the concept of data input and its significance in computer science.

• Data input is the process of removing data from a computer system for processing. It is significant in computer science as it is the final step in the data processing cycle.

• Data input is the process of entering data into a computer system for processing. It is significant in computer science as it is the initial step in the data processing cycle, where raw data is collected and converted into a form that can be used by the computer. This step is crucial as the accuracy and quality of the input data directly impact the output and the overall performance of the system.

• Data input is the process of entering data into a computer system for processing. It is significant in computer science as it is only used for storing data and has no impact on the processing.

• Data input is the process of entering data into a computer system for processing. It is insignificant in computer science as it has no impact on the overall performance of the system.

What are the main components of a computer system?

• CPU, memory, storage, input devices, output devices, and motherboard

• Operating system, software, applications

• RAM, ROM, cache, registers

• Keyboard, monitor, printer, scanner