3.2.3 Input/output and file handling

• What is the purpose of input devices in a computer system?

  Enable data entry
• What type of input device converts physical documents into digital files?

  Scanner
• Input devices enable data entry into the computer, while output devices provide information from the computer.


  True
• What input device is used for capturing audio input?

  Microphone
• What type of output device uses LCD, LED, or OLED technology?

  Monitor
• A projector uses LCD or DLP technology to project visual information onto a screen
• Input and output work together in programs to allow user interaction with the system.


  True
• Which output device is used for displaying visual information in programs?

  Monitor
• What is 'input' in the context of computer programs?

  Data entered into the system
• Which output device is used for producing hard copies of documents?

  Printer
• What is the primary function of input devices?

  Data entry into the computer
• Input devices enable users to interact with the computer by entering data.


  True
• What is the main application of a touchscreen device?

  Direct interaction via touch
• A printer is an example of an output device.


  True
• How do input and output devices work together in computer programs?

  Allow user interaction
• Steps involved in using the `input()` command in programming

  1️⃣ The `input()` command displays a prompt for the user to enter a value

  2️⃣ The user enters the value and presses Enter

  3️⃣ The entered value is stored in a variable
• The `print()` command starts a new line by default
• What is the role of input devices in a computer system?

  Enable data entry
• Match the input device with its functionality:

  Scanner ↔️ Converts physical documents into digital files

  Microphone ↔️ Captures audio input
• A plotter is used to create large-format technical drawings.


  True
• How does a program utilize input and output devices for user interaction?

  Processes input and generates output
• Input refers to data entered into the computer, such as through a keyboard or mouse
• What is the purpose of a keyboard as an input device?

  Entering text and commands
• Steps in using the `input()` command in programming

  1️⃣ The command displays a prompt for the user

  2️⃣ The user types the value and presses Enter

  3️⃣ The entered value is stored in a variable
• In the `print()` command, items are separated by commas.
• Match the file type with its extension and description:

  Text File ↔️ .txt - Stores plain text data

  CSV File ↔️ .csv - Comma-separated values for tabular data

  JSON File ↔️ .json - JavaScript Object Notation for structured data

  Binary File ↔️ .bin - Stores binary data
• What two arguments does the `open()` function take?

  File path and file mode
• What are two issues that can arise if a file is left open without being closed?

  Resource leaks and data loss
• The `read()` method is used to read a single line from a file.

  False
• `writelines()` writes a list of strings to a file, each on a new line.
• What does the `write()` method do when writing data to a file?

  Writes a single string
• Match the method with its description:

  `write(text)` ↔️ Writes a single string to the file

  `writelines(list_of_lines)` ↔️ Writes a list of strings to the file
• In computer science, input refers to the data that enters a computer system
• What does 'input' refer to in computer science?

  Data entered into the system
• What is the function of output devices in a computer system?

  Display or provide information
• Which input device captures audio for voice input or recording?

  Microphone
• The keyboard is used for entering text and commands
• Match the output device with its purpose:

  Monitor ↔️ Displays visual information

  Printer ↔️ Produces hard copies of documents

  Speaker ↔️ Outputs audio
• Which output device can produce 3D objects?

  3D Printer
• What output device is used for producing large-format drawings and designs?

  Plotter