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Questions and Answers
Which component of a digital system physically includes items like monitors and keyboards?
Which component of a digital system physically includes items like monitors and keyboards?
What role does the Central Processing Unit (CPU) play in a digital system?
What role does the Central Processing Unit (CPU) play in a digital system?
Which of the following is an example of software used for data manipulation?
Which of the following is an example of software used for data manipulation?
What are the main components included in hardware?
What are the main components included in hardware?
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Which software application is typically used for creating spreadsheets?
Which software application is typically used for creating spreadsheets?
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What is the correct order of file sizes from smallest to largest?
What is the correct order of file sizes from smallest to largest?
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How many bytes are there in one Megabyte?
How many bytes are there in one Megabyte?
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Which of the following accurately describes hardware?
Which of the following accurately describes hardware?
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What does a larger file size indicate about data representation?
What does a larger file size indicate about data representation?
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What is a primary function of digital systems?
What is a primary function of digital systems?
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Which of these is NOT a unit of digital storage size?
Which of these is NOT a unit of digital storage size?
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What is a bit in digital terminology?
What is a bit in digital terminology?
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Which of the following describes a byte?
Which of the following describes a byte?
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What happens to a transistor in digital hardware when the signal is 1?
What happens to a transistor in digital hardware when the signal is 1?
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In what context do digital devices utilize a binary number system?
In what context do digital devices utilize a binary number system?
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When data is stored in a file, what does the file size represent?
When data is stored in a file, what does the file size represent?
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Which of the following devices qualifies as digital systems?
Which of the following devices qualifies as digital systems?
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What components primarily make up digital hardware?
What components primarily make up digital hardware?
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What is the primary role of input devices?
What is the primary role of input devices?
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What type of hardware component is responsible for converting signals to a form understandable by humans?
What type of hardware component is responsible for converting signals to a form understandable by humans?
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Which of the following is NOT an example of an output device?
Which of the following is NOT an example of an output device?
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Which of the following best describes the function of a circuit board in a hardware device?
Which of the following best describes the function of a circuit board in a hardware device?
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Which input device would most likely be used in a video conferencing setup?
Which input device would most likely be used in a video conferencing setup?
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What is the main function of memory chips in a hardware device?
What is the main function of memory chips in a hardware device?
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What type of device is a joystick classified as?
What type of device is a joystick classified as?
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Which option is NOT a function of output devices?
Which option is NOT a function of output devices?
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Study Notes
Digital Systems
- Consists of hardware and software.
- Stores, processes, and transmits data in a digital format.
Hardware
- Any physical part of a digital system that can be touched, picked up, or moved.
- Includes circuit boards, memory chips, and electronic wiring.
- Examples include monitors, keyboards, hard drives, mouses, and CPUs.
Software
- Instructions used to manipulate data or to request other hardware components to perform a task.
- Software instructions are read by a CPU, which then sends electrical signals to the hardware to perform the task.
- Examples include word processors, spreadsheets, operating systems, anti-virus software, film editing software, and presentation software.
Binary
- All digital devices use the binary number system.
- The binary number system consists of two digits: 0 and 1.
- Electronic circuits in hardware consist of transistors, which are turned on for a signal of 1 and off for a signal of 0.
File Sizes
- Data is stored in files, and the file size represents the number of bits stored in the file.
- A single 1 or 0 is known as a bit (b).
- A collection of 8 bits is known as a byte (B).
- Most characters need one byte of storage.
- File sizes are often represented using kilobytes, megabytes, or gigabytes:
- 1024 bytes = 1 Kilobyte (kB)
- 1024 kilobytes = 1 Megabyte (MB)
- 1024 Megabytes = 1 Gigabyte (GB)
- The larger the file size, the more bits (0s and 1s) are used to represent the data in the file.
Hardware - Input & Output
- Any physical part of a digital system that can be touched, picked up, or moved.
- Hardware devices contain circuit boards, memory chips, and electronic wiring.
- Electronic signals (software instructions) are sent through the wiring to instruct the hardware to perform a task.
- Hardware can be grouped into input devices, output devices, and system unit devices.
Input Devices
- Send data to a computer.
- Allow users to interact with and control the computer.
- Convert human-understandable data and instructions into binary signals that are understood by the computer.
- Examples include microphones, mouses, keyboards, webcams, and joysticks.
Output Devices
- Act as the interface between humans and computers.
- Receive data from the CPU and convert it into human-understandable information.
- Can be in the form of text, images, music, voice messages, etc.
- Examples include monitors, projectors, headphones, and speakers.
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Description
This quiz covers the fundamental concepts of digital systems, including hardware and software components. It also delves into the binary number system and file sizes, essential for understanding how digital devices function. Test your knowledge about how data is stored, processed, and transmitted in digital formats.
