Computer Questions & Answers: Video Series

Network sequencing is an important evolution of computer science that allows data or information to be broken up into smaller packets and sent across a network. Discover how sequencing labels packets so that they're identifiable across a network with help from a computer and network administration specialist in this free video on network sequencing.

Microdrive is generally used as a household name for a compact flash drive, but it also describes the basic circuitry inside a processor. Find out how microdrives control the flow of information through a processor with help from a computer and network administration specialist in this free video on microdrives.

There are several different types of scanners, including flatbed scanners, paper-fed scanners and handheld scanners. Learn about how scanners are used to copy graphics, print or articles with help from a computer and network administration specialist in this free video on scanners.

RAM timing refers to the amount of time it takes for memory to prepare for access by the memory controller. Learn about the importance of RAM timing in a computer's performance with help from a computer and network administration specialist in this free video on RAM.

The control unit is that basic circuitry inside a processor that controls the flow of information through the processor. Discover how the function performed by the control unit varies between CPUs with help from a computer and network administration specialist in this free video on control units.

AI, or artificial intelligence, is a process in the computer science industry in which computers take action and make decisions based on environmental changes. Find out why digital thermostats can be considered a form of artificial intelligence with help from a computer and network administration specialist in this free video on artificial intelligence.

A data projector is a piece of hardware used to display images or screen shots from a computer to a wall or big screen. Find out how data projectors work through a VGA or RCA connection with help from a computer and network administration specialist in this free video on data projectors.

A virtual keyboard is software, and sometimes subsequent hardware, that allows a user to use a keyboard with different devices, such as a touch, screen, monitor or mouse. Discover how a virtual keyboard can be used for multi-language functions with help from a computer and network administration specialist in this free video on virtual keyboards.

A plasma screen is the most commonly used computer monitor today, and it works by receiving a video signal in thousands of tiny diodes, or LEDs, to illuminate pixels on the monitor. Learn about how plasma screens use contrast to manipulate three colors in forming images on a monitor with help from a computer and network administration specialist in this free video on plasma screens.

A lithium ion battery is a rechargeable battery in which ions move through the anode and cathode during discharge, and in the reverse direction while charging. Learn about the use of lithium ion batteries in computers and cell phones with help from a computer and network administration specialist in this free video on lithium ion batteries.

A DVD decoder comes in two basic types, which are a hardware decoder and a software decoder. Learn about DVD decoders and their use in capturing and storing different video formats with help from a computer and network administration specialist in this free video on DVD decoders.

A data warehouse is a repository of a company's electronic data, and it usually has a multitude of redundant servers for storing data. Find out how data warehouses are used to retrieve information for data backup with help from a computer and network administration specialist in this free video on data warehouses.

A cable modem is a device used to give someone Internet access from their Internet service provider, and some have wireless antennae that send signals into the air waves. Discover why a coaxial cable is needed for a wireless cable modem to work with help from a computer and network administration specialist in this free video on cable wireless modems.

The GPS system, or global positioning system, is a system of satellites that orbit the Earth for purposes of navigation. Find out how personal GPS devices must communicate with at least four satellites to deduce its own location with help from a computer and network administration specialist in this free video on GPS systems.

Keyboard sequencing refers to combination of keys that are used in order to execute a specific function within a program. Learn about commonly used keyboard sequences, such as "Ctrl, Alt, Delete," with help from a computer and network administration specialist in this free video on keyboard sequencing.

The differences between AGP and PCI video cards are many, including the fact that AGP cards can hold much greater memory. Find out how an AGP card requires an accelerated graphics port in a computer with help from a computer and network administration specialist in this free video on PCI and AGP video cards.

A SMART board is a digital whiteboard that allows the use of touchscreen capabilities to manipulate information, as it is connected to a computer. Discover how some SMART board utensils can be used like digital paintbrushes with help from a computer and network administration specialist in this free video on SMART boards.

A tank circuit is a basic electronic component that is found in radios and TVs, and it controls frequencies within such devices. Learn about how a tank circuit filters out specific information with help from a computer and network administration specialist in this free video on tank circuits.

A stepper motor, or step motor, consists of a permanent rotating shaft and electromagnets on stationary points that surround the motor. Find out how stepper motors work by rotating repetitively to deactivated stators with help from a computer and network administration specialist in this free video on stepper motors.