The need of data processing information in an enterprise that involves a computer network is considered very significant. There are several things that must be considered in building a network of computers, especially computer networking devices. The devices that are used should be tailored to the needs.
Generally, computer network equipment required is:
- Network Card (LAN Card) is installed on a PC function to be able to communicate with other computers that are interconnected with the network using a Local Area Network (LAN). To connect it using a coaxial cable, twisted pair and can be used also wireless LAN.
- Hub. Shaped tool box with some holes in the back of this is the tool as a recipient of signals from a computer, then mentranmisikan to another computer that is connected in one network and the appliance is a signal booster on UTP cable.
- Switch. Basically a switch function similar to the Hub. What distinguishes it is the switch knows the MAC address that serves to sort out which data should be transmitted. While the hub does not recognize the MAC address so it can not pick and sort out which data should be transmitted and what is not.
- Router, a device connecting the computer network as data packets between two network segments, and even more.
- Repeater, this device serves to strengthen the signal for connecting a remote device.
- Bridge, this device serves to bridge the two networks. In fact, the bridge can connect networks that have a medium of communication and network topology that is different though.
- Modem, this device is used to convert analog signals into digital signals and vice versa digital to analog. This tool has a role linking computers to the Internet. The tool is divided in 2 types of internal modem and external modem.
- Cable, it was the path that connects each device. There are 3 types of cable commonly used in building a network such as coaxial cables, UTP cables and fiber optic cable.
- Connector, this tool is a device used as an interface cable mounted on the end of the cable. There are several kinds of connectors in accordance with the type of cable to be used, such as: BNC connector for coaxial cable, RJ45 connector for UTP cable types and ST connectors for fiber optic cable.
- Crimping tools, this tool is used to attach the cable to the RJ45 connector.
- Cabel Tester, the tool is used to check the cables and RJ45 connectors are already installed if installed correctly or not.
Source :: Anneahira
Caring for notebook or laptop can actually be practically easy. Support equipment maintenance became more varied and easily available. Caring Notebook preferably on two sides, namely the hardware side (hardware) and the software (software).
Notebook Hardware Maintenance
To treat the notebook from the hardware side, we can start by providing physical protection for notebooks. Because it is mobile or can be easily moved, we must provide good protection. Gunakakan softcase or pocket protector to avoid scratches or collision with hard objects.
To bring a notebook, use a bag that holds a special place to put the notebook. Better to use a bag that has the ability to hold water in anticipation of rain. A variety of bags with various models and price range available in the market.
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Now, it's not a rare thing again when many people access the Internet with a modem. With this handy little thing, people can access the Internet anytime and anywhere. But though it was a lot of people who wear them, many have yet to really know, what exactly is a modem?
Definition Modem
Modem comes from the abbreviation of two parts of the system; modulator and demodulator. Modulator is the part that converts the signal information into the signal (carrier) and ready to ship. While the demodulator is the part that separates the information signal (which contain data or messages) of the received carrier signal, so that information can be received well.
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CPU (Central Processing Unit) is a major part in the form of computer hardware and is the "brains" of his computer. CPU functions found on all types of computers is to process the data entered via the keyboard and displayed through the monitor screen.
The development of the CPU can be divided into several periods.
First Generation
ENIAC (Electronic Numerical Integrator and Computer), produced by IBM in 1945 is one of the "fathers" super-size computer that big. Just imagine, with a device consisting of 18,000 air-tight tube, it takes a room area of 18 × 8 square meters for operation! Nearly half a football field wide!
When talking about computer cable, maybe we will be wondering? What computer cable, which one? Because, the type of computer cable and his designation, all kinds. There are cables for power supply, data cable on CPU, monitor cable, or data cable for USB. Well, in this review will be discussed on a computer cable for data transfer allotment, ie, Firewire and USB ports that are used as a port for connecting an electronic device with a computer through a computer cable or data cable.
Firewire
Port FireWire was adopted in 1995 as an official industry standard IEEE1394. FireWire widely used in digital video recorder camera (DV camcorder), external hard drives and external DVD writer.
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CPU or central processor units are often called "microprocessor" or simply by its short name, ie "processor". Often times we URLs CPU as the brain of a set of computer systems. That's where the processing of program instructions in progress.
Actually, the inside of the CPU or processor device consists of only three units (components), main control unit, arithmetic and logic unit and the unit registers. This is the third unit that will synergize in running all kinds of computer operations. Okay, let's begin to discuss one by one ...
1. Control Unit (Control Unit / CU)
The control unit is part of the CPU that controls the flow of data travel. More simply, if we suppose seabrek data as vehicles crowded the highway, then the control unit is more or less can we think of as police traffic control.
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The need of data processing information in an enterprise that involves a computer network is considered very significant. There are several things that must be considered in building a network of computers, especially computer networking devices. The devices that are used should be tailored to the needs. 
