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57 Cards in this Set

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  • Back
Local Area Network
Network Interface Card
Digital Signal Line
A connectoin to the Internet can be broken down into the following components:
Physical connection
Logical connection
Protocol is a formal description of a set of rules and conventions that govern how devices on a network communicate.
TCP/IP is the primary protocol used on the Internet.
Applications interpret the data and display the information in an understandable format.
Web browser
A web browser displays HTML as a web page.
File Transfer Protocol
File Transfer Protocol
File Transfer Protocol is used to download files and programs from the Internet.
A transistor is a device that amplifies a signal or opens and closes a circuit. Mircoprocessors can have millions of transistors.
Integrated circuit (IC)
An integrated circuit is a device made of semiconductor material. It contains many transistors and performs a specific task.
A resistor is a device that is made of material that opposes the flow of electric current.
A capacitor is an electronic component that stores energy in the form of an electrostatic field. It consists of two conducting metal plates separated by an insulating material.
A connector is a port or interface that a cable plug into. Examples include serial, parallel, USB, and disk drive interfaces.
Light emitting diode (LED)
A light emitting diode is a semiconductor device that emits light when a current passes through it. These are commonly used as indicator lights.
a backplane is a large circuit board that contains sockets for expansion cards.
Memory chips
RAM chips on memory cards plug into the motherboard.
Network interface card (NIC)
A network interface card is an expansion board that provides a network communication connection to and from a PC.
Video Card
A video card is a board that plugs into a PC to give it display capabilities. Video cards typically include onboard microprocessors and additional memory to speed up and enhance graphics display.
Sound Card
A sound card is an expansion board that handles all sound functions.
Parallel port
A parallel port is an interface that can transfer more than 1 bit at a time. It connects external devices, such as printers.
Serial port
A serial port is an interface used for serial communication in which only 1 bit is transmitted at a time.
Mouse port
A mouse port is designed for connecting a mouse to a PC
Keyboard port
A keyboard port is designed to connect a keyboard to a PC.
Power cord
A power cord connects an electrical device to an electrical outlet to provide power to the device.
Universal Serial Bus port (USB)
A universal serial bus port interface lets peripheral devices such sa mice, modems, keyboards, scanners, and printers be plugged in and unplugged without resetting the system.
Printed circuit board (PCB)
A printed circuit board is a thin plate on which chips (integrated circuits) and other electronic components are placed.
CD-ROM Drive
A CD-ROM drive is an optical drive that can read information from a CD-ROM. THis can also be a CD-RW (compact disk read-write) drive or a DVD (digital video disk) drive or a combination of all three in one drive.
Central processing unit (CPU)
The central processing unit is the "brain" of the computer,where most of the calculations take place.
Floppy disk drive
The floppy disk drive is a device that can read and write to floppy disks.
Hard disk drive
A hard disk drive is a device that reads and writes data on a hard disk.
A microprocessor is a silicon chip that contains a CPU.
A motherboard is the computer's main circuit board. The motherboard is crucial because it is the computer's nerve center.
A bus is a collection of circuits through which data is transmitted from one part of a computer to another. The bus connects al lthe internal ocmputer components to the CPU.
ISA bus
Industry-Standard Architecture bus
PCI bus
Peripheral component interconnect bus
Random-access memory (RAM)
Random-access memory is also known as read-write memory. RAM is the main working aread, or temporary storage, used by the CPU for most processing and operations. RAM requires electrical power to maintain data storage.
Read-only memory (ROM)
Read-only memory is a type of computer memory in which data has been prerecorded and can only be read. A version of ROM known as EEPROM (electronically erasable programmable read-only memory) can be written to. It is also called Flash memory or firmware.
Expansion slot
An expansion slot is an opening in a computer usually on the motherboard.
System unit
A system unit is the main component of the PC system. It includes the case, chassis, power supply, microprocessors, main memory, bus, expansion cards, disk drives, and ports.
Power supply
The power supply component supplies power to a computer by taking alternating current (AC) and converting it to 5 to 12 volts direct current (DC) to power the computer.
Personal Computer Memory Card International Association card slots
PCMCIA card slots are used in laptop computers.
Interrupt Request
Interrupt Request
An Interrupt Request is a signal that informs the CPU that an event needing its attention has occurred.
When selecting a NIC for a network, consider the following:
Type of network
Type of medium
Type of system bus
A modem is an electronic device that is used for computer communications through telphone lines.
Public Switched Telephone Network
Direct Memory Address
Direct Memory Address
DMA transfers data from RAM to a device without going through the CPU>
Domain Name System
Dynamic Host Configuration Protocol
Packet Internet Groper
Internet Control Message Protocol
Hypertext Markup Language
Hyperlinks are computer-program commands that point to other HTML files on a web server or other places in the same documents, which provide shortcuts to other web pages and files.
Troubleshooting Internet Connection Problems
Step 1 Define the problem.
Step 2 Gather the facts.
Step 3 Consider the possibility.
Step 4 Create an action plan
Step 5 Implement the plan.
Step 6 Observe the results