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Questions and Answers
What is one of the primary functions of a slate tablet PC?
What is one of the primary functions of a slate tablet PC?
Which of the following statements is true regarding the binary system?
Which of the following statements is true regarding the binary system?
Which character coding scheme is primarily used in mainframe computers?
Which character coding scheme is primarily used in mainframe computers?
How is a bit defined in the context of electronic data representation?
How is a bit defined in the context of electronic data representation?
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What is another name for the system board in a computer?
What is another name for the system board in a computer?
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What is the primary function of the control unit in the microprocessor?
What is the primary function of the control unit in the microprocessor?
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Which component of the system board provides communication pathways among electronic components?
Which component of the system board provides communication pathways among electronic components?
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What are chips typically mounted on?
What are chips typically mounted on?
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Which of the following statements correctly describes the role of slots on the system board?
Which of the following statements correctly describes the role of slots on the system board?
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What are the two types of operations performed by the Arithmetic-Logic Unit (ALU)?
What are the two types of operations performed by the Arithmetic-Logic Unit (ALU)?
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What is the main purpose of RAM in a computer system?
What is the main purpose of RAM in a computer system?
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Which statement about flash memory is accurate?
Which statement about flash memory is accurate?
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What role does cache memory play in a computer system?
What role does cache memory play in a computer system?
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Which characteristic describes the nature of RAM?
Which characteristic describes the nature of RAM?
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What is the function of virtual memory in a computer system?
What is the function of virtual memory in a computer system?
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What is the primary function of expansion buses in a computer system?
What is the primary function of expansion buses in a computer system?
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Which of the following ports is primarily used to connect devices for high speed networking?
Which of the following ports is primarily used to connect devices for high speed networking?
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Which type of port is typically used for connecting musical instruments?
Which type of port is typically used for connecting musical instruments?
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What distinguishes specialized ports from standard ports?
What distinguishes specialized ports from standard ports?
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What are legacy ports primarily characterized by?
What are legacy ports primarily characterized by?
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What is the primary use of the Universal Serial Bus (USB)?
What is the primary use of the Universal Serial Bus (USB)?
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Which of the following is NOT a type of standard port?
Which of the following is NOT a type of standard port?
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What is the primary difference between USB and FireWire?
What is the primary difference between USB and FireWire?
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Which type of port is most suitable for connecting printers and scanners?
Which type of port is most suitable for connecting printers and scanners?
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What is the primary function of cables in the context of computer hardware?
What is the primary function of cables in the context of computer hardware?
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What is the primary source of DC power for desktop computers?
What is the primary source of DC power for desktop computers?
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Which component is typically found in laptops and handheld devices for power supply?
Which component is typically found in laptops and handheld devices for power supply?
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IrDA technology facilitates which of the following?
IrDA technology facilitates which of the following?
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Which statement about expansion slots is correct?
Which statement about expansion slots is correct?
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What distinguishes legacy ports from standard ports?
What distinguishes legacy ports from standard ports?
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What is a common characteristic of all buses in computer systems?
What is a common characteristic of all buses in computer systems?
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Study Notes
System Unit Types
- Slate Tablet PC - A monitor attached to the system unit, lacking an integrated keyboard. Uses a mobile OS, accepts gesture input, and displays content primarily.
- Handheld Computer System Units - Include personal digital assistants (PDAs) and smartphones that contain electronic components, secondary storage, and input/output devices.
- Palm Computers - Contain a complete computer system.
Data Representation & Encoding
- Data and instructions are represented electronically using digital signals.
- Digital signals are electrical and have an on/off state, unlike analog signals, which are continuous.
- The Binary System uses 0 and 1 as digits. Each 0 or 1 is a bit (binary digit).
- Bytes are groups of eight bits and represent one character.
Character Coding Schemes
- ASCII (American Standard Code for Information Interchange) - A common coding scheme.
- EBCDIC (Extended Binary Coded Decimal Interchange Code) - Primarily used for mainframe and super computers.
- Unicode - Handles languages with a large number of characters.
System Board
- Also known as the main board or motherboard, it controls communication between components.
- Components connect to the system board.
- Data path - Traffic monitor.
System Board Components
- Sockets - Connection points for chips.
- Chips - Tiny circuit boards etched onto squares of silicon. Also known as silicon chips, semiconductors, or integrated circuits. They are mounted on carrier packages.
- Slots - Provide connection points for specialized cards or circuit boards.
- Bus lines - Pathways that support communication among electronic components.
Microprocessor
- The Central Processing Unit (CPU) is located on the microprocessor chip and acts as the brain of the computer.
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Two Basic Components
- Control Unit - Directs program instructions, flow between memory and ALU, and flow between CPU and I/O devices.
- Arithmetic-logic unit (ALU) - Performs arithmetic and logical operations. It also holds data, instructions, and information.
RAM
- Random Access Memory (RAM) holds programs and data being currently accessed by the CPU.
- Volatile - Data is emptied when power is shut off.
- Flash RAM - Can retain data even when power is disrupted and is used in high-end portable computers.
- Cache memory - Improves processing by acting as a temporary high-speed holding area between the memory and CPU. It holds frequently accessed information for faster processing.
RAM Types
- Flash memory - Retains data even if power is disrupted. It is the most expensive type of RAM and is used in digital telephones, digital video cameras, and portable computers.
- Virtual Memory - Large programs are divided into parts and stored on a secondary device (usually a hard disk).
Expansion Buses
- Connect the CPU to other components and slots on the system board.
- Universal Serial Bus (USB) - Connects external USB devices.
- FireWire - Similar to USB but more specialized, used with audio and video equipment.
- PCI Express (PCIe) - A dedicated path for each connected device.
Ports
- Sockets for connecting external devices.
- Ports can connect directly to the system board or connect to cards inserted into slots.
Types of Ports
- Standard Ports - Examples include VGA, DVI, USB, FireWire, and Ethernet.
- Specialized Ports - Examples include S/PDIF (Sony/Philips Digital Interconnect Format), HDMI (High Definition Multimedia Interface), and MIDI (Musical Instrument Digital Interface).
- Legacy Ports - Older types of ports, mostly replaced by faster, more flexible ports like USB. Examples include serial ports, parallel ports, keyboard and mouse ports, IrDA, and game ports.
Cables
- Connect external devices to the system unit through ports.
- One end connects to the device, and the other end has a connector that matches the port.
Power Supply
- Computers require direct current (DC).
- DC power is provided by converting alternating current (AC) from wall outlets or batteries.
- Desktop computers use power supply units.
- Notebooks and handhelds use AC adapters.
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Description
This quiz focuses on various types of computer system units, including slate tablet PCs, handheld computers, and palm computers. Additionally, it covers fundamental concepts of data representation, digital signals, and character coding schemes such as ASCII and EBCDIC. Test your understanding of these critical topics in computing!