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Which type of monitor is typically thinner and referred to as a flat-panel display?
Which type of monitor is typically thinner and referred to as a flat-panel display?
A desktop computer is normally used in portable settings such as on an airplane.
A desktop computer is normally used in portable settings such as on an airplane.
False
What does UPS stand for in the context of computer power management?
What does UPS stand for in the context of computer power management?
Uninterruptible Power Supply
The first computer 'bug' found by Grace Hopper was a dead _____ that blocked the readings.
The first computer 'bug' found by Grace Hopper was a dead _____ that blocked the readings.
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Which of the following is NOT a type of personal computer?
Which of the following is NOT a type of personal computer?
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Match the following components with their primary function:
Match the following components with their primary function:
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Grace Hopper coined the term 'debugging' to refer to the process of fixing program faults.
Grace Hopper coined the term 'debugging' to refer to the process of fixing program faults.
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Name one advantage of laptop computers over desktop computers.
Name one advantage of laptop computers over desktop computers.
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The operating system (OS) is the most important _____ that runs on a computer.
The operating system (OS) is the most important _____ that runs on a computer.
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Which voltage is generally used for older types of serial port amplifier circuits?
Which voltage is generally used for older types of serial port amplifier circuits?
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The +5V voltage is no longer used to supply motherboards.
The +5V voltage is no longer used to supply motherboards.
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What is the purpose of the feedback controller in the transformer setup?
What is the purpose of the feedback controller in the transformer setup?
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The zero-volt ground is also called __________.
The zero-volt ground is also called __________.
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What type of connector is the MOLEX?
What type of connector is the MOLEX?
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Match the following standard output voltages with their typical usage:
Match the following standard output voltages with their typical usage:
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What color wire indicates +12V in a common PSU connector?
What color wire indicates +12V in a common PSU connector?
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The SATA power connector has 20 pins.
The SATA power connector has 20 pins.
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The ATX 12V (P4) connector is used to supply power to the motherboard and the processor.
The ATX 12V (P4) connector is used to supply power to the motherboard and the processor.
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What stores data and programs permanently outside the computer?
What stores data and programs permanently outside the computer?
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The _______ power connector supplies power to floppy disk drives.
The _______ power connector supplies power to floppy disk drives.
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What is the maximum current typically supported by the -5V output?
What is the maximum current typically supported by the -5V output?
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+5V standby voltage is present when the system is __________.
+5V standby voltage is present when the system is __________.
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Match the following hardware components with their definitions:
Match the following hardware components with their definitions:
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Which of the following types of memory retains data when power is turned off?
Which of the following types of memory retains data when power is turned off?
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Which output voltage is used for supplying power to some AGP video cards?
Which output voltage is used for supplying power to some AGP video cards?
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The PCI Express connector is only available in a 6-pin configuration.
The PCI Express connector is only available in a 6-pin configuration.
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Name one example of an output device.
Name one example of an output device.
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The _______ is lost when the computer power is off.
The _______ is lost when the computer power is off.
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What function does the primary storage serve in a computer system?
What function does the primary storage serve in a computer system?
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What is the purpose of the 'CS (Cable Select)' setting?
What is the purpose of the 'CS (Cable Select)' setting?
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The Address Bus transfers actual data between the computer components.
The Address Bus transfers actual data between the computer components.
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What component connects the CPU to peripheral devices?
What component connects the CPU to peripheral devices?
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The _____ bus is designed for fast 3D graphics and video.
The _____ bus is designed for fast 3D graphics and video.
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Match the following buses with their primary usage:
Match the following buses with their primary usage:
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Which component is responsible for determining how many bits can be transmitted at once?
Which component is responsible for determining how many bits can be transmitted at once?
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What is the primary function of the Power Supply Unit (PSU)?
What is the primary function of the Power Supply Unit (PSU)?
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The processor is often referred to as the brain of the computer.
The processor is often referred to as the brain of the computer.
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What does RAM stand for?
What does RAM stand for?
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___________ refers to memory chips that store data permanently.
___________ refers to memory chips that store data permanently.
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Match the following types of memory with their characteristics:
Match the following types of memory with their characteristics:
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Which of the following is known as the backbone of the computer?
Which of the following is known as the backbone of the computer?
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CMOS uses battery power to retain data when the computer is turned off.
CMOS uses battery power to retain data when the computer is turned off.
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What is the long-term memory of a computer where the OS and programs are stored?
What is the long-term memory of a computer where the OS and programs are stored?
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A ____________ is an optional part of the system unit that enhances functions.
A ____________ is an optional part of the system unit that enhances functions.
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What is the size conversion for 1 GB?
What is the size conversion for 1 GB?
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Study Notes
Monitor Types
- New monitors commonly use LCD (Liquid Crystal Display) or LED (Light Emitting Diode) technology, referred to as flat-panel displays.
- Older monitors, known as CRT (Cathode Ray Tube), are bulkier, heavier, and consume more desk space.
Key Components
- Power Cord: Connects the monitor to a power outlet. UPS (Uninterruptible Power Supply) provides surge protection and temporary power during blackouts.
- Keyboard: Primary device for data entry and communication with the computer.
- Mouse: Pointing device to navigate and interact with the computer interface.
Types of Personal Computers
- Desktop Computers: Vary in size and are widely used in workplaces, schools, and libraries.
- Laptop Computers: Portable, battery, or AC-powered, allowing use in various locations.
- Servers: Dedicated computers that provide resources or information to other computers in a network.
Miscellaneous Computing Devices
- Tablet Computers, Mobile Phones, Game Consoles, and TVs also fall under personal computing devices.
Computer Bug Origin
- Grace Hopper discovered the first computer bug—a moth causing issues in the Mark I—leading to the term "bug" in computing, dating back to 1889.
- Hopper is credited with coining "debugging," the process of fixing software errors.
Operating System (OS)
- The fundamental software that manages memory, processes, and hardware, crucial for computer operations.
Standard Output Voltages
- -12V: Used in older serial port applications; generally unused now.
- -5V: Found in early personal computers for specific controllers; mostly obsolete.
- 0V - Ground: Common reference point for voltages.
- +3.3V: Powers processors, some memory types, and digital circuits.
- +5V: Supplies power to motherboards, also present in standby mode.
- +12V: Primarily for disk drives and cooling fans.
Common PSU Connectors
- P1: ATX 20/24-pin connector providing power to the motherboard.
- ATX 12V (P4): 4-pin connector supplementing power to the processor.
- MOLEX and Berg (Mini-MOLEX): Provide power to storage drives.
- SATA/Serial ATA: A 15-pin connector primarily for SATA hard drives.
- PCI Express: 6/8-pin power connector for graphics cards.
Essential Hardware Components
- CPU: The computer's brain that processes instructions.
- Primary Storage (Memory): Temporary storage for data and programs; includes volatile (e.g., RAM) and non-volatile memory.
- Secondary Storage: Permanent storage options like HDDs, USBs, and optical disks.
- Input Devices: Include keyboards, mice, and scanners, allowing data entry.
- Output Devices: Processed data displayed via monitors, printers, and speakers.
System Unit Parts
- Power Supply Unit (PSU): Converts AC power to DC for the computer.
- Motherboard: The main circuit board connecting all components.
- RAM (Random Access Memory): Short-term memory for quick data access.
- Hard Disk Drive (HDD): Long-term storage for the OS and programs.
Memory and Storage Sizes
- Units: 1 KB (1024 bytes), 1 MB (1,000,000 bytes), 1 GB (1 billion bytes), 1 TB (1 trillion bytes).
- ROM: Non-volatile memory that retains data permanently.
- Firmware: Non-volatile memory for read-only data.
- Flash Memory: Retains memory without power.
- CMOS: Retains information when the computer is powered off.
Master/Slave Jumper Setting
- Master: Main drive in a dual-drive setup.
- Slave: Second drive on the same cable.
- CS (Cable Select): Automatically sets master/slave based on cable positioning.
Computer Buses
- Buses are electrical channels enabling communication between components.
- Data Bus: Transfers actual data.
- Address Bus: Transfers information about data locations in memory.
- System Bus: Connects CPU to main memory.
- Expansion Bus: Connects CPU to peripheral devices.
Common Expansion Buses
- ISA Bus: Outdated, used for basic devices.
- PCI Bus: Used for video and sound cards.
- PCI Express (PCIe) Bus: Faster, supports modern hardware.
- AGP Bus: Specialized for high-performance graphics.
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Description
This quiz explores the differences between newer flat-panel displays like LCD and LED monitors, and older CRT monitors. You'll learn about key components, such as the power cord, and the advantages of modern technology in display devices.
