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Computer Hardware
Computer hardware is a general term used to refer to all the physical parts of a computer. Internal hardware devices include hard drives and motherboards, while external hardware devices include monitors, mice, keyboards, and printers.
11,849 Questions
Input device is a device you plug into computer. For example: mouse, keyboard...
Is computer serial or parallel device?
Neither. A computer case is just a box to hold the parts of a computer. It provides no form of communication itself.
The advantages are that a simpler instruction set found in a RISC processor are easier for compilers to write programs in, as well as the simple design of the processor that is allowed to result from this simple instruction set. In the past, CISC processors were used when people had to program in the assembly language of the processor itself. These processors had many different instructions that could perform complicated operations with one instruction, making the assembly programmers life easier. Eventually, we wrote programs called compilers which converted high level languages, such as C, into these assembly instructions. As C is much easier to program in than assembly language, this made our lives even easier. Unfortunately, it was found that it was difficult to program a compiler in such a way that it could realise when these complicated instructions offered by the CISC processor would be useful. This, in addition to the fact that some complicated instructions were actually slower than a series of simple instructions that performed the same task, meant that it was easier to write compilers that only used the simple instructions. By cutting out the complicated instructions, simpler processor designs could be used, and this is, in essence, what a RISC processor is. Of course, the most popular desktop architecture today, x86, is a CISC processor, but this was a case of people unwilling to change to a different instruction set. Ultimately, modern processors which use the x86 architecture actually convert the CISC instructions of the architecture into a simpler RISC-like series of instructions, before being executed on the processor. So, to sum up: + simpler processor design + simpler instruction set + easier for compilers to write programs for
it is arround 0.30 GB
remember 1012 KB=1 MB and 1012 MB=1GB
dont cheat on your exam
Gb-Gigabyte is the largest. 1 GB = 1,000,000,000 bytes 1 MB = 1,000,000bytes 1 KB = 1,000bytes 1 Byte = 1
It duplicates the frame to all Ethernet ports, except the port it came from.
A switch's MAC table is built not from destination addresses it receives, but by the source MAC addresses. So the frame is broadcast throughout the broadcast domain, until the end device with a matching MAC address responds to the broadcast, thus giving the switch a new source address to add to its MAC table.
The prefix mega- means "1 million", and a byte is usually made up of 8 bits, so:
- A megabit (Mbit) is
- 1,000,000 bits
- 1,000 kilobits (kbit)
- A megabyte (MB) is
- 1,000,000 bytes (B)
- 1,000 kilobytes (kB)
- 8,000,000 bits
- 8,000 kilobits (kbit)
In some contexts, people in the computing and information technology industry use the prefix mega differently. Because digital computing is based upon a binary numbering system, mega- in many cases meant 1,048,576, while in others it meant 1,000,000.
With the increase in use of, and access to, the technology by persons with little or no education in digital computing, or experience of this historical meaning, the prefixes mega- and kilo- etc. became confusing because of their ambiguous meanings.
With the increase in storage capacities, the discrepancy between the two measurement systems became much larger and more important, and the old meaning of mega in the binary numbering system is now, therefore, formally known as megabinary.
Moving a joystick handle and pressing joystick buttons sends codes through the connecting wire into the computer. A program in the computer receives these input codes and decides what to do. It can ignore it. It can move a cursor around. It can move a character around on the screen. It can make a character on the screen jump. It can make a weapon on the screen shoot or change weapons. All based on the receiving information from the Joystick input device.
Can you connect your iPad to the tv?
Yes. All you need is a component cable which can be purchased at Radio Shack or Best Buy. Just plug the component cable into your iPod and then to the back of your TV. Make sure you have your iPod settings set to TV Out.
What are the Minimum components to make a PC functional?
The bare minimum hardware requirements for a PC to function are:
Power supply
Motherboard
CPU
RAM
Video (usually one comes as part of a motherboard)
Note that in order to make a PC usable, one should add:
a hard disk or some other storage device with an operating system installed on it
a keyboard (and mouse)
a monitor
a CD or DVD drive usually comes in handy
a case (to hold it all together)
What is the system board of the computer?
System Board is also called the Motherboard; A motherboard is the centra printed circuit board (PCB) in many modern computers and holds many of the crucial components of the system, while providing connectors for other peripherals. The motherboard is sometimes alternatively known as the main board, system board, or, on Apple computers, the logic board. It is also sometimes casually shortened to mobo.
A virtual port is a software emulation of a port which normally would be present in hardware. This is most commonly used with modems and printers.
Many internal modems emulate a COM port. When modems first became common by far the most common type was an external modem which plugged into a serial port (a COM port) in the back of the machine. Nearly all of the early dial-up networking applications were written with the assumption that the modem could be found on one of these COM ports. While it is no longer necessary for the modem to reside on a COM port, most new modems still emulate one in order to maintain compatibility with these legacy applications. Printers can also reside on a virtual port for much the same reasons. All printers used to plug into a parallel port (an LPT port) on the computer. As a result many legacy programs were written with the assumption that any printers would be located on an LPT port. When USB printers became commonplace it became necessary to allow these USB printers to be assigned a virtual parallel port in order to maintain compatibility with these older programs. This can be configured in the OS in the printers settings and is most often used for DOS-level point-of-sale or data-entry applications.
What is hardware and networking?
Networking hardware typically refers to equipment facilitating the use of a computer network. Typically, this includes routers, switches, hubs, gateways, access points, network interface cards, Networking cables, network bridges, modems, ISDN adapters, firewalls and other related hardware.
The most common kind of networking hardware today is copper-based Ethernet adapters, helped largely by its standard inclusion on most modern computer systems. Wireless networking has become increasingly popular, however, especially for portable and handheld devices.
Other hardware prevalent within computer networking is datacenter equipment (such as file servers, database servers and storage areas), network services (such as DNS, DHCP, email etc) as well as other specific network devices such as content delivery.
Other diverse devices which may be considered Networking hardware include mobile phones, PDAs and even modern coffee machines. As technology grows and IP-based networks are integrated into building infrastructure and household utilities, network hardware becomes an ambiguous statement owing to the increasing number of 'network capable' endpoints.
Can computer hardware components be recycled?
Yes. In fact, simply throwing them away may violate some laws in your area. Use the link in the "Related links" section below to find a disposal center near you (in the US).
How does the watt rating of a power supply affect devices you can use in your system?
The higher wattage rating means that your computer will run more efficiently with more components (hard drives, DVD burners, high end video and sound cards etc.) without robbing power from the processor and mother board.
How can one protect hardware devices with a firewall?
One can protect their computer hardware devices by installing a firewall in order to prevent any malicious activity to be sent to ones computer. Without a firewall one runs the risk of receiving a virus through email or even by visiting certain websites.
What does the performance of a hard drive affect?
The three most notable things that hard drive performance will effect is:
- The start up time of your computer. As the information need to run the OS must be transferred from the hard drive to the systems RAM.
- The start up time of programs.
- If you are using almost all of your RAM space the system will use your hard drive to store information normally keep in RAM. In this case your hard drive performance will effect your entire system, but more ram will correct this problem better then a faster hard drive.
Three components tht must conform to the same socket type?
The Central Processing Unit (CPU), Cooling System(heat sink and/or CPU fan) and Motherboard (the main circuit board).
The elements of the mother board are
1. THE MOTHERBOARD
2.CPU- Central Processing Unit
3.Main Memory / Random Access Memory (RAM)
4.BIOS- Basic Input Output System
5. CMOS-Complimentary Metal Oxide Semiconductor
6. Cache Memory
7. Expansion Buses
8.Firewire header
9.PCI Express 16x slots
10. PCI Express 1x Slot
11. Chipset - North Bridge (with heatsink)
12.ATX Power connector
13. Motherboard controls
14. Chipset - South Bridge
15. Serial ATA Connector
16. USB 2.0 header
17. Motherboard Battery
18. Floppy Drive Connector
19. IDE connector Not on Diagram
20. BIOS (Basic Input Output System) Chip
What is unguided communication medium?
A guided communication medium is a space be mostly of solid state such as wires , where tranmission/recieveing data is only carried out within the space that the medium occupies. In the case of a wire, it's volume. Transmission is restricted to that particular space, thus it is called a guided communication. Example of this types of medium inlcude the coaxical cable, fiber optic cable, twisted pair cable... A guided communication medium is a space be mostly of solid state such as wires , where tranmission/recieveing data is only carried out within the space that the medium occupies. In the case of a wire, it's volume. Transmission is restricted to that particular space, thus it is called a guided communication. Example of this types of medium inlcude the coaxical cable, fiber optic cable, twisted pair cable...
What are the different Personal Computer hardware components and their functions?
keyboard-used to type data/information
mouse-used to click data from the graphical use interface
ram-used to store data /information permanent
Which is found in a PC power supply Transformer or rectifier?
A rectifier is a device that converts AC to DC.
A transformer is a device that changes the ratio of current to voltage.
A computer power supply functions as both.
Answer found in CompTIA A+ Guide to Managing and maintaining Your PC 6th edition on page 154.
