Computers & Hardware

A:

The five elements of a computer system are datapath, control, memory, input and output. All five of these elements work together to allow the computer to function properly.

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  • What is transmission media?

    Q: What is transmission media?

    A: Transmission media is the material pathway that connects computers, different kinds of devices and people on a network. It can be compared to a superhighway carrying lots of information. Transmission media uses cables or electromagnetic signals to transmit data.
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  • How do you unfreeze a computer mouse?

    Q: How do you unfreeze a computer mouse?

    A: For a wired or wireless mouse, unplug the USB cable, or plug and reconnect it to correct the problem. Unfreeze a laptop mouse by enabling the touchpad. To do this, you will use the Fn key and the Touchpad key.
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  • When was the first computer invented?

    Q: When was the first computer invented?

    A: Charles Babbage invented the first mechanical computer, called the Difference Engine, in 1821 and completed it in 1832. The Difference Engine could perform simple calculations and compile mathematical tables. Babbage later conceived the Analytical Engine, a device that could perform any calculation, but was unable to construct a prototype during his lifetime.
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  • What are microprocessors used for?

    Q: What are microprocessors used for?

    A: Microprocessors are used in servers, desktop computers, laptops and mobile devices. They are popular in embedded devices, which traditionally use microcontrollers. Microprocessors were named to set them apart from larger processors used in the middle of the 20th century.
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  • Where can you sell an old laptop?

    Q: Where can you sell an old laptop?

    A: Used laptops and personal computers can be sold locally at garage sales, flea markets, consignment and pawn shops and through classified ads in local newspapers. Used laptops and PCs can also be sold on the Internet through retail sites that allow private sales, including Amazon, eBay and Bonanza.
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  • What is the definition of "microprocessor"?

    Q: What is the definition of "microprocessor"?

    A: A microprocessor is a tiny electronic chip found inside a computer's central processing unit and other electronic devices. Its basic function is to take input, process it and then provide appropriate output.
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  • What are the main functions of a computer?

    Q: What are the main functions of a computer?

    A: The main functions of a computer are to receive, manipulate, display and store data. These basic functions are performed by commands that the computer receives either by a program or a human user. The commands that the computer receives are known as raw data. After the raw data is processed by the computer, the data that the computer displays is known as information.
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  • Why has my computer screen turned sideways?

    Q: Why has my computer screen turned sideways?

    A: If everything on a computer screen has turned sideways, the culprit is likely to be someone attempting to pull a prank; a quick combination of keystrokes changes the orientation of a computer's screen. It is startling and disorienting to see the screen display turned sideways, but it does not mean that something terrible or irreparable has happened to the computer.
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  • What is the difference between Mac OS X Lion vs. OS X Mountain Lion?

    Q: What is the difference between Mac OS X Lion vs. OS X Mountain Lion?

    A: CNET explains that Macintosh OS X Mountain Lion was a minor upgrade to the Lion operating system. It improved applications and provided useful new features for file sharing and social connectivity. Apple computer’s Mountain Lion was the ninth major operating system released for Macintosh computers.
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  • What is the difference between KB, MB and GB?

    Q: What is the difference between KB, MB and GB?

    A: While all three are units of memory storage on a computer, a kilobyte (KB) is smaller than a megabyte (MB) and a MB is smaller than a gigabyte (GB). There are 1,024 bytes in 1 KB, 1,024 KB in 1 MB and 1,024 MB in 1 GB.
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  • What are strategic information systems?

    Q: What are strategic information systems?

    A: Strategic information systems are the information systems that companies use to help achieve their goals and become more efficient. Businesses use these systems to achieve a competitive advantage on their competitors as they seek to provide a good or service in a way that is better than that of their competition. For example, a strategic information system can be used to provide a product at a lower cost than competing organizations.
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  • What is the function of a modem?

    Q: What is the function of a modem?

    A: A modem is an external or internal device thats function is to transmit digital data over communication lines. Traditional modems once used frequently with dial-up networks convert analog data from telephone lines into computer digital data. Broadband modems transfer digital data between two digital devices.
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  • What is the difference between inkjet and laser printers?

    Q: What is the difference between inkjet and laser printers?

    A: Inkjet printers create images by shooting drops of ink onto paper as dictated by a computer, while laser printers use a xerographic process in which an image is digitally scanned by a laser, then transferred to paper. It is important to consider the advantages and disadvantages of both types when shopping for a printer.
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  • How do I make my laptop wireless enabled?

    Q: How do I make my laptop wireless enabled?

    A: Enable a wireless connection by pushing a hardware button on the device and then activating the computer's wireless software on Microsoft Windows laptops. After the wireless hardware is ready, select a wireless connection from the menu of choices.
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  • How do you change the language on your laptop?

    Q: How do you change the language on your laptop?

    A: For a laptop using the Windows operating system, enter the control panel, click on the Regional and Language Options button, and proceed to change the language under the Keyboards and Languages tab. The selection changes the display language. Change your input language on the language bar to complete the process.
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  • Where do deleted history items from a computer go to?

    Q: Where do deleted history items from a computer go to?

    A: Deleted history items from a computer go into the computer's cache, or the Temporary Internet Files folder. Items in the cache may include audio, video, pictures and websites. The cache also contains cookies picked up from various websites, which help load those sites faster in the future; when a person empties the Temporary Internet Files folder, the computer does not dump cookies unless specified to do so.
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  • What are the different types of microcomputers?

    Q: What are the different types of microcomputers?

    A: There are many different types of microcomputers, such as personal computers, tablet computers, smartphones and servers. Any type of computer or device that has a microprocessor chip is a microcomputer.
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  • What is the role of device drivers?

    Q: What is the role of device drivers?

    A: A device driver is a component that a computer’s operating system uses to interact with a hardware device, such as a network adapter or modem. A driver interacts with the device through a communications subsystem to which the hardware connects. The operating system or other computer program calls a function in the driver to execute commands on the device.
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  • When was the first personal computer invented?

    Q: When was the first personal computer invented?

    A: Many consider the Kenback-1 as the first ever personal computer, introduced in 1971 for the price of $750. At this time, the term "personal computer" was still to be coined.
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  • How is RAM measured?

    Q: How is RAM measured?

    A: RAM, or random access memory, is measured in both size, which is typically in gigabytes, and speed, which is typically in megahertz. Computers take different sizes and types of RAM.
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  • What is the standard typing speed?

    Q: What is the standard typing speed?

    A: For a casual typist, the average typing speed is 41 words per minute (WPM) with 92 percent accuracy, according to eLearning Industry. The average is between 50 and 80 WPM for individuals who write for a living.
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