Podcast
Questions and Answers
What is the primary function of a Power Supply Unit (PSU) in a computer?
What is the primary function of a Power Supply Unit (PSU) in a computer?
- To store data temporarily
- To provide a way to input data
- To convert AC power to DC power (correct)
- To connect different components
What type of device is a scanner?
What type of device is a scanner?
- Processing device
- Input device (correct)
- Output device
- Storage device
What is the purpose of a heat sink in a computer?
What is the purpose of a heat sink in a computer?
- To enhance the computer's processing speed
- To cool the computer's components (correct)
- To store data in non-volatile memory
- To display visual output
What is the primary function of the Motherboard in a computer?
What is the primary function of the Motherboard in a computer?
What is the primary function of a Network Interface Card (NIC)?
What is the primary function of a Network Interface Card (NIC)?
What is designed to safeguard computer components from the impacts of electrostatic discharge (ESD)?
What is designed to safeguard computer components from the impacts of electrostatic discharge (ESD)?
What type of computer memory is used to store data that needs to be accessed quickly by the CPU?
What type of computer memory is used to store data that needs to be accessed quickly by the CPU?
What is the primary purpose of a bus in a computer?
What is the primary purpose of a bus in a computer?
What is the purpose of a UPS (Uninterruptible Power Supply) in a computer system?
What is the purpose of a UPS (Uninterruptible Power Supply) in a computer system?
Which component is responsible for providing power to the other components in a computer?
Which component is responsible for providing power to the other components in a computer?
What is NOT a type of computer storage device?
What is NOT a type of computer storage device?
Which type of computer memory is non-volatile and cannot be changed or overwritten?
Which type of computer memory is non-volatile and cannot be changed or overwritten?
What performs calculations and conversion of data in a computer?
What performs calculations and conversion of data in a computer?
Which component is responsible for providing audio output in a computer?
Which component is responsible for providing audio output in a computer?
Which component is responsible for controlling the flow of data between the computer's components?
Which component is responsible for controlling the flow of data between the computer's components?
Which company is mainly producing RISC CPUs?
Which company is mainly producing RISC CPUs?
What is the main difference between a Hard Disk Drive (HDD) and a Solid-State Drive (SSD)?
What is the main difference between a Hard Disk Drive (HDD) and a Solid-State Drive (SSD)?
What type of memory is used for storing large amounts of data and persists even when there is no power to the computer?
What type of memory is used for storing large amounts of data and persists even when there is no power to the computer?
What provides the various voltage needs of a computer?
What provides the various voltage needs of a computer?
What type of storage device stores data as electrical charges in semiconductor flash memory and has no moving parts?
What type of storage device stores data as electrical charges in semiconductor flash memory and has no moving parts?
What is a volatile memory that contains data which the processor is using at a given time?
What is a volatile memory that contains data which the processor is using at a given time?
What is the primary advantage of an LED monitor over a standard LCD monitor?
What is the primary advantage of an LED monitor over a standard LCD monitor?
Which connector is used to connect disk drives to the motherboard?
Which connector is used to connect disk drives to the motherboard?
What type of connector is used to transmit data at a very high speed over long distances and contains strands of glass or plastic?
What type of connector is used to transmit data at a very high speed over long distances and contains strands of glass or plastic?
What is the primary function of the CPU?
What is the primary function of the CPU?
What type of memory retains its data even when the power is turned off?
What type of memory retains its data even when the power is turned off?
What is the purpose of a motherboard in a computer?
What is the purpose of a motherboard in a computer?
Which component is responsible for rendering graphics for display?
Which component is responsible for rendering graphics for display?
What is the purpose of a modem in a computer?
What is the purpose of a modem in a computer?
What type of computer port is used for display purposes?
What type of computer port is used for display purposes?
What is the purpose of the BIOS in a computer?
What is the purpose of the BIOS in a computer?
What type of computer memory is the fastest but also the most expensive?
What type of computer memory is the fastest but also the most expensive?
Which type of computer memory is the fastest but also the most expensive?
Which type of computer memory is the fastest but also the most expensive?
What technology allows for high-speed connection of peripherals like hard-drives and RAID arrays?
What technology allows for high-speed connection of peripherals like hard-drives and RAID arrays?
What type of connector is used to transmit data at a very high speed over long distances?
What type of connector is used to transmit data at a very high speed over long distances?
What type of computer memory is used to store data that needs to be accessed quickly by the CPU?
What type of computer memory is used to store data that needs to be accessed quickly by the CPU?
What is the standard connector used today for home/workstation use cases?
What is the standard connector used today for home/workstation use cases?
What is the optimal solution for sharing a monitor, mouse, and keyboard between two computers?
What is the optimal solution for sharing a monitor, mouse, and keyboard between two computers?
Which type of connector is commonly used for analog video and is sometimes referred to as the DE-15 or HD-15 connector?
Which type of connector is commonly used for analog video and is sometimes referred to as the DE-15 or HD-15 connector?
What type of hard drive is a combination of a hard disk drive and a solid-state drive?
What type of hard drive is a combination of a hard disk drive and a solid-state drive?
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Study Notes
Computer Hardware Fundamentals
Central Processing Unit (CPU)
- Considered the "brain" of the computer
- Responsible for performing calculations and conversions, and reading and writing data and instructions to and from storage devices
Random Access Memory (RAM)
- Stores data temporarily while the computer is running
- Used to store data that needs to be accessed quickly by the CPU
- Volatile memory, meaning it loses its data when the power is turned off
Hard Disk Drive (HDD) and Solid-State Drive (SSD)
- Store the computer's operating system, software programs, and user data even when the computer is turned off
- Non-volatile memory, meaning it retains its data even when the power is turned off
- HDD uses spinning disks to store data, while SSD uses memory chips
- SSD is faster and more expensive than HDD
Motherboard
- Connects and allows communication between different computer components
- Controls the memory cache, power management, external buses, and some peripheral devices
Power Supply Unit (PSU)
- Provides power to the other components in a computer
- Converts AC power to DC power to power the computer's components
Graphics Card (GPU)
- Processes and renders graphics for display
- Not responsible for storing the computer's operating system or providing power to the computer's components
BIOS (Basic Input/Output System)
- Provides the firmware for initializing hardware during the boot process
- Not responsible for controlling the computer's power supply or managing the computer's memory
Input/Output Devices
- Keyboard is used to input data into a computer
- Printer is not an input device, but an output device
- Mouse is an input device
- Scanner is an input device
- Microphone is an input device
Computer Ports
- USB is a type of computer port
- HDMI is a type of computer port
- Wi-Fi is not a type of computer port, but a type of network connectivity
- Ethernet is a type of computer port
- CRT, LCD, and LED are types of computer monitors, not ports
- LED monitors have lower power consumption and better brightness and contrast than LCD monitors
Storage Devices
- Hard Disk Drive (HDD) is a type of storage device
- Solid-State Drive (SSD) is a type of storage device
- Optical Disk Drive (ODD) is a type of storage device
- Random Access Memory (RAM) is not a type of storage device
- Cache memory is a type of memory, not a storage device
- Virtual memory is a type of memory, not a storage device
Network Components
- Network Interface Card (NIC) connects the computer to a network
- Modem is responsible for converting digital signals to analog signals over telephone lines
- Router is not responsible for converting digital signals to analog signals over telephone lines
- Switch is not responsible for converting digital signals to analog signals over telephone lines
- Hub is not responsible for converting digital signals to analog signals over telephone lines
Other Components
- Heat sink is used to cool the computer's components
- UPS (Uninterruptible Power Supply) is used to prevent damage to the computer during a power surge or outage
- KVM Switch is used to enable the sharing of the monitor, mouse, and keyboard between two computers
- Fiber Optic cable is used to transmit data at a very high speed over long distances
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