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All About Hardware
Thursday, February 2, 2012 | 11:16 PM |
0 commentsName:Asri Wulandari
Grup of 7A
SMP 73
CPU including in processing device.a CPU processor or central processing unit controls the functions of most electronic products. The CPU accepts the input data, processes the information and sends it to the component that is in charge of executing the action. CPUs are also known as microprocessors and are at the center of any computer system. Although CPUs are most often thought of as a computer chip, they can also be found in many other electronic devices including cell phones, hand held devices, microwaves, television sets and toys.
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There are a series of steps that a CPU performs to execute a command. Each command is handled individually and a CPU can process multiple commands in a matter of seconds. The more powerful the CPU, the faster the commands are processed.
1. A command is issued by the system user using an input device such as a keyboard or mouse.
2. The command is sent to the prefetch unit. The unit accesses the preloaded CPU memory to identify the command and sends it to the command unit.
3. The command unit determines what steps come next. This data is passed on to the decode unit.
4. The decode unit transfer the data into binary code and sends it to the ALU.
5. The ALU changes the raw data into an actual command.
6. The ALU sends a copy of the command to the RAM or ROM before sending it back to the command unit.
7. The command unit sends the code to the part of the system that will actual perform the action.
8. The action is executed and the result is sent back to the user.
Memory including in process divice.Computer memory or RAM processes every bit of data our computer uses at almost unbelievable speeds with uncanny consistency. While these little transistor filled chips may seem like magic, there are really a carefully designed technology without which our computers would cease to operate.
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Modern computers load all system and program files being used as well as all data related to the operation of those files into RAM. For instance, when writing a letter in Microsoft Word the program, data in the letter, and supporting operating system files are all loaded in the computers RAM from the hard disk. Then they are loaded from RAM to the CPU and back when operated on.
Hard disk including in process device.
One of the most necessary parts of a computer is the hard drive. Besides storing digital information, hard disk drives also contain all of a computer's operating data, including the operating system. In configurations with multiple hard drives, they are also useful in backing up data for archival purposes.Hard disk has component such as platter,head electronic series,lasing stucture,DSP,chip memory,etc. A hard disk wipe program usually runs from a removable storage device such as a CD. Simply by loading this program into the computer with the hard disk to be wiped, the process could be implemented. This means that it is possible to perform the hard disk wipe on multiple computers relatively easily.
Motherboard including in processing device.The function of the computer motherboard is to act as the main circuit board that connects and communicates to all the devices and components attached. The motherboard also facilitates the communication of devices with each other. Motherboards are designed around the type of central processing unit (CPU) that will be installed. Because motherboards act as the base for all other computer components, the number of PCI slots, USB headers, memory slots, SATA headers, and other slots should be checked ahead of time before building a personal computer.
VGA card including in processing device
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A VGA card is a display adapter that provides base-level VGA resolution.
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A VGA card allows a computer monitor to display pixels, the basic units of image components, at a base level. The base resolution offered by VGA cards is typically at a value of 640 x 480 pixels. Computers with IBM operating systems typically display in VGA when booted up. The graphic cards or hardware drivers then switch on, offering advanced graphics functions.
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VGA cards are plug-in cards that are inserted into the computer's motherboard and convert graphic patterns, or bitmaps, into electronic signals for the monitor's screen. A bitmap, or pixmap, is a binary map in which one bit, or basic computing unit of information, represents one pixel on the screen.
Network card including in processing device.The primary function of a network interface card (NIC) is to provide a physical link to a computer network. This connection allows computers to communicate with servers, as well as other computers on the network. Each NIC has a unique serial number, which is called a MAC address. Every computer connected to the network is required to have a unique MAC address that is stored on the network interface card. If you are building a home network or utilizing broadband Web access, your NIC connects you to the outside world.
Sound card including in processing device.The sound card is an invaluable tool for gamers, multimedia experts and regular everyday people. It has a short history, but is one of the main components used in computers.The sound card functions as an audio processor for your computer. Analog or digital signals come into the input of the card and are digitally interpreted as algorithms which are in turn interpreted as waveforms and produce a sonic signal in the output of the computer sound card. The sound card is an installed, running device on your computers system, with programmed hardware properties and separate device drivers. The sound card controls all audio on the computer.
Power supply including in processing device.The function of a power supply in a computer is to give out power to you're hard drive, mother bored and DVD rom/roms. Without a power supply you're compter wont even start.
It is to allow your computer to run without having to keep it charging right next to a socket all day.
Fan including in processing device.Computer fans are sometimes noisy and irritating, but they perform the very important function of cooling the computer, specifically the central processing unit. If this component reaches a pre-set temperature, the computer will shut down. This is called a "thermal check," and mainframes, servers and personal computers all have this protective feature built in.
2.Output Device
lcd monitor including in output device.A liquid crystal displays or LCD is a type of flat panel monitor, meaning it's designed to be thin. This feature should not be confused with flat screen, meaning the computer monitor's screen is flat instead of curved. LCDs refresh their screen differently than CRT monitors. An LCD screen is created by electric voltages hitting liquid crystal cells, allowing 64 different shades per cell. LCDs have one resolution size, and, if a smaller resolution is adopted, a black border will appear around the re-sized resolution.
Projector including in output device.the function is display the result of image/ visual processing data .
Portable speaker including in Output device.Potable speaker has electric signals and transforms them back into waves to create sound waves.
Printer including in output device.It's used to print something on paper.Based how it works,printer devided into 2 groups , impact printer and non-impact printer.
3.Input Device
Scanner is a device used to scan text ,image,etc. Scanner including in input devices.The function of scanner are
sending scanned files (Network Scanner)Scan files can be sent to or stored on a computer, and you can specify the format of a scan file according to how the file will be used,It is used to store a photograph into a computer and input printed data or image directly into the computer from hard copy , etc.
Barcode reader is an input device.This device functions to read a squared or thick vertical lines code that is translated to numbers.
Keybord is an input device that functions to type or input letters,numbers or certain symbols into software of operating system run by computer.Keybord can give a direct instruction or order to the computer.
Mouse including in input device.Mouse is a pointing device that is used to manage cursor position on the screen data into computer besides keybord.
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All About Hardware
Thursday, February 2, 2012 | 11:16 PM | 0 commentsName:Asri Wulandari
Grup of 7A
SMP 73
CPU including in processing device.a CPU processor or central processing unit controls the functions of most electronic products. The CPU accepts the input data, processes the information and sends it to the component that is in charge of executing the action. CPUs are also known as microprocessors and are at the center of any computer system. Although CPUs are most often thought of as a computer chip, they can also be found in many other electronic devices including cell phones, hand held devices, microwaves, television sets and toys.
-
There are a series of steps that a CPU performs to execute a command. Each command is handled individually and a CPU can process multiple commands in a matter of seconds. The more powerful the CPU, the faster the commands are processed.
1. A command is issued by the system user using an input device such as a keyboard or mouse.
2. The command is sent to the prefetch unit. The unit accesses the preloaded CPU memory to identify the command and sends it to the command unit.
3. The command unit determines what steps come next. This data is passed on to the decode unit.
4. The decode unit transfer the data into binary code and sends it to the ALU.
5. The ALU changes the raw data into an actual command.
6. The ALU sends a copy of the command to the RAM or ROM before sending it back to the command unit.
7. The command unit sends the code to the part of the system that will actual perform the action.
8. The action is executed and the result is sent back to the user.
Memory including in process divice.Computer memory or RAM processes every bit of data our computer uses at almost unbelievable speeds with uncanny consistency. While these little transistor filled chips may seem like magic, there are really a carefully designed technology without which our computers would cease to operate.
-
Modern computers load all system and program files being used as well as all data related to the operation of those files into RAM. For instance, when writing a letter in Microsoft Word the program, data in the letter, and supporting operating system files are all loaded in the computers RAM from the hard disk. Then they are loaded from RAM to the CPU and back when operated on.
Hard disk including in process device.
One of the most necessary parts of a computer is the hard drive. Besides storing digital information, hard disk drives also contain all of a computer's operating data, including the operating system. In configurations with multiple hard drives, they are also useful in backing up data for archival purposes.Hard disk has component such as platter,head electronic series,lasing stucture,DSP,chip memory,etc. A hard disk wipe program usually runs from a removable storage device such as a CD. Simply by loading this program into the computer with the hard disk to be wiped, the process could be implemented. This means that it is possible to perform the hard disk wipe on multiple computers relatively easily.
Motherboard including in processing device.The function of the computer motherboard is to act as the main circuit board that connects and communicates to all the devices and components attached. The motherboard also facilitates the communication of devices with each other. Motherboards are designed around the type of central processing unit (CPU) that will be installed. Because motherboards act as the base for all other computer components, the number of PCI slots, USB headers, memory slots, SATA headers, and other slots should be checked ahead of time before building a personal computer.
VGA card including in processing device -
A VGA card is a display adapter that provides base-level VGA resolution.
-
A VGA card allows a computer monitor to display pixels, the basic units of image components, at a base level. The base resolution offered by VGA cards is typically at a value of 640 x 480 pixels. Computers with IBM operating systems typically display in VGA when booted up. The graphic cards or hardware drivers then switch on, offering advanced graphics functions.
-
VGA cards are plug-in cards that are inserted into the computer's motherboard and convert graphic patterns, or bitmaps, into electronic signals for the monitor's screen. A bitmap, or pixmap, is a binary map in which one bit, or basic computing unit of information, represents one pixel on the screen.
Network card including in processing device.The primary function of a network interface card (NIC) is to provide a physical link to a computer network. This connection allows computers to communicate with servers, as well as other computers on the network. Each NIC has a unique serial number, which is called a MAC address. Every computer connected to the network is required to have a unique MAC address that is stored on the network interface card. If you are building a home network or utilizing broadband Web access, your NIC connects you to the outside world.
Sound card including in processing device.The sound card is an invaluable tool for gamers, multimedia experts and regular everyday people. It has a short history, but is one of the main components used in computers.The sound card functions as an audio processor for your computer. Analog or digital signals come into the input of the card and are digitally interpreted as algorithms which are in turn interpreted as waveforms and produce a sonic signal in the output of the computer sound card. The sound card is an installed, running device on your computers system, with programmed hardware properties and separate device drivers. The sound card controls all audio on the computer.
Power supply including in processing device.The function of a power supply in a computer is to give out power to you're hard drive, mother bored and DVD rom/roms. Without a power supply you're compter wont even start.
It is to allow your computer to run without having to keep it charging right next to a socket all day.
Fan including in processing device.Computer fans are sometimes noisy and irritating, but they perform the very important function of cooling the computer, specifically the central processing unit. If this component reaches a pre-set temperature, the computer will shut down. This is called a "thermal check," and mainframes, servers and personal computers all have this protective feature built in.
2.Output Device
lcd monitor including in output device.A liquid crystal displays or LCD is a type of flat panel monitor, meaning it's designed to be thin. This feature should not be confused with flat screen, meaning the computer monitor's screen is flat instead of curved. LCDs refresh their screen differently than CRT monitors. An LCD screen is created by electric voltages hitting liquid crystal cells, allowing 64 different shades per cell. LCDs have one resolution size, and, if a smaller resolution is adopted, a black border will appear around the re-sized resolution.
Projector including in output device.the function is display the result of image/ visual processing data .
Portable speaker including in Output device.Potable speaker has electric signals and transforms them back into waves to create sound waves.
Printer including in output device.It's used to print something on paper.Based how it works,printer devided into 2 groups , impact printer and non-impact printer.
3.Input Device
Scanner is a device used to scan text ,image,etc. Scanner including in input devices.The function of scanner are sending scanned files (Network Scanner)Scan files can be sent to or stored on a computer, and you can specify the format of a scan file according to how the file will be used,It is used to store a photograph into a computer and input printed data or image directly into the computer from hard copy , etc.
Barcode reader is an input device.This device functions to read a squared or thick vertical lines code that is translated to numbers.
Keybord is an input device that functions to type or input letters,numbers or certain symbols into software of operating system run by computer.Keybord can give a direct instruction or order to the computer.
Mouse including in input device.Mouse is a pointing device that is used to manage cursor position on the screen data into computer besides keybord.
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