0
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
What computer case is best at cooling?
There isn't a computer case with the "best" airflow.
A computer that intakes air at the front and distributes this at the rear is fine...
Heavy Graphics = Side panel fan
CPU = Side panel fan/Liquid cooling.
Some are:
Silverstone RV02-E
The Cooler master 'HAF' series
Antec Lanboy Air
How do you disable USB ports in a computer?
There are five ways of blocking USB ports completely:
1. Block physically by using a USB Port Blocker such as available from LINDY Connection Perfection, or by improvising.
2. Block from registry in Windows
3. Block using GPEDIT.MSC if you are using Windows Professional versions
4. Block from BIOS
5. Block using 3rd party software
The first four methods above will completely block your USB ports and you won't even be able to use them for devices you may need. So, it is better to use a software solution which can allow your USB drives but block others and also allows you to use devices like printers and mouse. I evaluated a lot of USB blocking software but the best was uHook Personal. You can block all kinds of removable storage devices, password protect any kind of removable storage devices, set policies for authorized and unauthorized devices and can even monitor what files were copied on allowed devices too.
Other products available are usbnotify, usbmon, etc.
Answer:
In normal home environments, you can either block the USB ports from the BIOS, cover the ports, disable the drivers in Windows, or you can edit the Windows registry to block the use of USB.
However in corporate environments, you can setup endpoint security software to give and deny permissions to groups of users to safely allow the use of USB ports.
You can disable or block the USB port by downloading and installing free software like NetWrix USB Blocker. It can be used on local computer also, but you will need to enter the domain name as workgroup in order to block the USB ports on a local computer which is not connected to any network.
Block using 3rd party software
AccessPatrol is a software that will allow you to control the USB / External devices access of all the computers on your network from a central console.
NetWrix USB blocker is a free utility which lets you block any USB ports on one or more computer on your LAN network. It lets you apply a centralized USB blocking to prevent the virus spreading though pen drives, removable drives and other USB portable devices.
This tool can is the best easy to use tool for system admins which need to block all the USB ports on the network as a part to the security group policy on the network. It uses group policy so you cannot use this tool on some of the versions of windows like Windows XP Home and Windows Home Premium.
USB Lock RP and ST provide real time administrative control over all portable memory devices connected to a PC within your network. The Control may be placed on any PC within your network or at server level. Security is at machine level.
Why is your computer loud all of a sudden?
Some computers are just loud. Cheaper fans make more noise, and some systems don't make any attempt to reduce noise by throttling fans down.
If, on the other hand, your system -used- to be quiet, but has for some reason gotten louder during recent months... there is a possible solution.
Most new computers have a temperature sensor on the CPU (and on other heat-sensitive bits) a special circuit keeps track of this temperature and when it rises, increases the fan speed.
What happens is the heatsink (and fan) get clogged up with dust, so it dissipates less heat, the sensor detects this & cranks up the fan to compensate. Cleaning the dust out of your heatsink and fan may go a long way to quieting your computer.
You can get a can of compressed air at any office or electronics supply store. With the machine turned off & unplugged, open up the side panel & blow everything out.
Note: DO NOT use compressed air to blow inside your floppy, cdrom or DVD drives.
How do you set up your own wireless network?
It is different for an Apple and a PC.
For an Apple, you must have an airport card. That card will have the ability to pick up wi-fi signals, something you need. You would install the airport card near the battery. Once installed, just type in your password and router name in your settings under internet, and you should be able to connect.
What can cause a faulty power supply?
A faulty power supply does not supply any power at all to a computer or supplies incorrect voltages. Most of the time faulty power supplies are not serviceable and require replacement.
A wireless router is used to connect a computer, or network, to another computer or network. It works either through a broadband cable or a DSL (Digital Subscriber Line) internet connection. It uses radio waves to broadcast signals, and also to collect them. The wireless router's main function is to decipher the radio waves and translate them into terms that we can understand. It helps us to relay information from one place to another, or multiple places.
9 How many samples can be stored in 8 bits?
If 8-bits were used to hold one number, the sample range would go from -128 to +127. Since sound samples can be both positive and negative you would use this range instead of the "bit math" 0 to 255. If 8-bits were used to hold one number, the sample range would go from -128 to +127. Since sound samples can be both positive and negative you would use this range instead of the "bit math" 0 to 255.
How do you know if your soundcard is broken?
If the sound does not work, it is possible that the sound card is broken.
An OC12 is the equivalent of 4 OC3's or 12 DS3's. A DS3 Breaks down to 28 T1's. Therefore there are 336 T1's on an OC3.
If you go one step further there are 672 DS0's on a DS3 or 8064 DS0's on an OC12. a DS0 is a 64k Channel equal to a single POTS line.
http://techblog.intelletrace.com/what-is-a-ds3-hub/
Most newer netbooks do not include a optical drive because most programs that require installation medium such as a CD or DVD would most likely be too resource heavy for a netbook.
The entire purpose of a netbook is just as its name implies, a slower computer designed mostly for net (aka internet) access.
What are the voltages for a ATX power supply?
the ATX standard supplies three positive rails: +3.3 V, +5 V, and +12 V
Give the correct cable type for 100BasedT network?
10BASE-T can use CAT3 cabling or better, while 100BASE-T requires CAT5 or better (such as CAT5e or CAT6).
Can you use ipod charger for other usb connections?
If you mean 'other connections' as in 'use it to connect other things to the computer', then no. You can only use the iPod charger to connect iPods to the computer.
Why are CD-ROM and DVD drives called optical drives?
It is called an optical drive because the mechanism for reading and writing information is optical (light) based - it uses lasers.
How do you connect two computers to share processing power?
The most common setup for two or more computers to share resources is what is known as a "Beowulf cluster." Beowulf clusters are a collection of computers running Linux, and sometimes Solaris and FreeBSD, networked together, with one computer serving as the "main" workstation. Several Linux distributions exist to set up a Beowulf cluster. Some are as easy as booting the computer from a LiveCD, and selecting whether you want it to be the main terminal, or simply another node.
Twenty examples of input devices and output devices of computer?
# Keyboard # Mouse # Touch Screen # Touch pad # Joystick # Bar code reader # Light pen # Graphics tablet # Microphone # Eye scanner # Magnetic Ink Reader # Optical Mark Reader # Optical Character Reader # ECG # MRI #
What is an input device that contains keys users press to enter data into a computer?
Keyboard, Mouse, Hard Drive, Modem, Flash Drive (Or Memory Stick/Card) CD, DVD, Computers are for information! Everything they have got is a device for putting information into the computer!
What is 6 stage instruction pipelining?
1. FI (fetch instruction) - get the next instruction
2. DI (decode instruction) - decode the opcode and operands
3. CO (calculate operands) - calculate EA of the operands
4. FO (fetch operands) - fetch operands from memory (not necessary for register
data)
5. EI (execute instruction) - execute instruction storing result if necessary
6. WO (write operand) - write the result in MEM
Is ROM the main circuit board of the system unit?
No. ROM is an acronym for Read Only Memory. ROM can range from computer chips that hold instructions for running the computer to CD-ROMs or DVD-ROMs.
The memory that CAN be written to is RAM, which is an acronym for Random Access Memory.
Where can one purchase a wireless USB hub?
A network USB hub is a crucial networking device that allows multiple computers to connect to the same piece of hardware, such as a printer. Since they are so widely used, they can be found in may places including local electronics stores, office supply centers, Walmart and often directly from the manufacturer such as Belkin. They can be purchased online from Amazon, Newegg and TigerDirect as well.
What are the 4 main hardware categories of a computer?
The four main categories of computer hardware are as follows:
Input
Output
Storage
Processing
Input hardware is all the hardware concerning what gets put into the computer. Keyboards, mouse, scanners, digital cameras, and joysticks are all examples of computer input hardware.
Output hardware involves taking the work of the computer and projecting it outward. Printers, as well as monitors and televisions, are examples of output hardware.
Storage hardware allows the computer to hold and maintain a file database. Hard drives, both those installed in the computer and those held externally, as well as USB drives, are examples of storage hardware.
Processing hardware is the real meat of the computer, consisting of the CPU, ROM, and RAM. These things are what make the computer function as a computer.
Is rom a input or output device?
ROM can refer to many things. For example, the full name for a CD is a CD-ROM which stands for compact disc, read-only memory. So it acts as a storage device, and in some mind sets, could be considered input to the computer.
In digital circuits a ROM is often used as a look up table type circuit and is generally something that has several inputs, performs logical operations on those inputs, and outputs the corresponding value(s).
So, the answer to your question? It depends on what you're actually talking about, but it would most easily be defined as neither in the normal sense of input and output devices for a computer. You'll have to define what you are referring to by ROM.
