Sunday, January 20, 2008
Saturday, January 19, 2008
Computer
MikroTik™ v2.9 PC Router Software
Major features:
* Best wireless performance
* Improved Nstreme performance
* Powerful QoS control
* P2P traffic filtering
* High availability with VRRP
* Bonding of Interfaces
* Improved interface
* Smaller and Less resource-hungry
* Tons of other new features
* Advanced Quality of Service
* Stateful firewall, tunnels
* STP bridging with filtering
* High speed 802.11a/b/g wireless with WEP/WPA
* WDS and Virtual AP
* HotSpot for Plug-and-Play access
* RIP, OSPF, BGP routing
* remote WinBox GUI and Web admin
* telnet/mac-telnet/ssh/console admin
* real-time configuration and monitoring
Detailed Description
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Audio, TV & Home Theater
Electronics
Office Electronics
Electronics refers to the flow of charge (moving electrons) through nonmetal conductors (mainly semiconductors), whereas electrical refers to the flow of charge through metal conductors. For example, flow of charge through silicon, which is not a metal, would come under electronics; whereas flow of charge through copper, which is a metal, would come under electrical. This distinction started around 1908 with the invention by Lee De Forest of the triode. Until 1950 this field was called "Radio technics" because its principal application was the design and theory of radio transmitters and receivers.
The study of new semiconductor devices and related technology is considered a branch of physics whereas the design and construction of electronic circuits to solve practical problems comes under electronics engineering. This article focuses on engineering aspects of electronics.
Electronic devices and components
An electronic component is any physical entity in an electronic system whose intention is to affect the electrons or their associated fields in a desired manner consistent with the intended function of the electronic system. Components are generally intended to be in mutual electromechanical contact, usually by being soldered to a printed circuit board (PCB), to create an electronic circuit with a particular function (for example an amplifier, radio receiver, or oscillator). Components may be packaged singly or in more complex groups as integrated circuits. Some common electronic components are capacitors, resistors, diodes, transistors etc.
[edit] Types of circuits
[edit] Analog circuits
Most analog electronic appliances, such as radio receivers, are constructed from combinations of a few types of basic circuits. Analog circuits use a continuous range of voltage as opposed to discrete levels as in digital circuits.
The number of different analog circuits so far devised is huge, especially because a 'circuit' can be defined as anything from a single component, to systems containing thousands of components.
Analog circuits are sometimes called linear circuits although many non-linear effects are used in analog circuits such as mixers, modulators, etc. Good examples of analog circuits include vacuum tube and transistor amplifiers, operational amplifiers and oscillators.
Some analog circuitry these days may use digital or even microprocessor techniques to improve upon the basic performance of the circuit. This type of circuit is usually called "mixed signal."
Sometimes it may be difficult to differentiate between analog and digital circuits as they have elements of both linear and non-linear operation. An example is the comparator which takes in a continuous range of voltage but puts out only one of two levels as in a digital circuit. Similarly, an overdriven transistor amplifier can take on the characteristics of a controlled switch having essentially two levels of output.
[edit] Digital circuits
Digital circuits are electric circuits based on a number of discrete voltage levels. Digital circuits are the most common physical representation of Boolean algebra and are the basis of all digital computers. To most engineers, the terms "digital circuit", "digital system" and "logic" are interchangeable in the context of digital circuits. In most cases the number of different states of a node is two, represented by two voltage levels labeled "Low"(0) and "High"(1). Often "Low" will be near zero volts and "High" will be at a higher level depending on the supply voltage in use.
Computers, electronic clocks, and programmable logic controllers (used to control industrial processes) are constructed of digital circuits. Digital Signal Processors are another example.
Building-blocks:
Highly integrated devices:
Computers
Computers
A computer is a machine that manipulates data according to a list of instructions.
The first devices that resemble modern computers date to the mid-20th century (1940–1945), although the computer concept and various machines similar to computers existed earlier. Early electronic computers were the size of a large room, consuming as much power as several hundred modern personal computers(PC).[1] Modern computers are based on tiny integrated circuits and are millions to billions of times more capable while occupying a fraction of the space.[2] Today, simple computers may be made small enough to fit into a wristwatch and be powered from a watch battery. Personal computers, in various forms, are icons of the Information Age and are what most people think of as "a computer"; however, the most common form of computer in use today is the embedded computer. Embedded computers are small, simple devices that are used to control other devices — for example, they may be found in machines ranging from fighter aircraft to industrial robots, digital cameras, and children's toys.
The ability to store and execute lists of instructions called programs makes computers extremely versatile and distinguishes them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a certain minimum capability is, in principle, capable of performing the same tasks that any other computer can perform. Therefore, computers with capability and complexity ranging from that of a personal digital assistant to a supercomputer are all able to perform the same computational tasks given enough time and storage capacity.
MP3 & Media Players
Networking, Storage & More
Networking, Storage & More
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Tips Sederhana Men-Tune WinXP
Posted: 2008-10-08 15:25:48 UTC+07:00
Mempercepat waktu Boot.Fitur yg lumayan asik dari Windows XP adalah kemampuan untuk mendefrag ketika ada dalam proses booting. Boot Defrag pada prinsip menata file2 yg relevan dengan booting secara berurutan. Secara default fitur ini telah diaktifkan pada beberapa Build Windows, tapi beberapa build windows tidak, ada baiknya kalo kita cross check terhadap fiotur yg satu ini.
Mempercepat Loading Windows Menu.
1. Start Menu > Run
2. Regedit
3. HKEY_LOCAL_MACHINE’SOFTWARE’Microsoft’Dfrg’BootOpt imizeFunction
4. Cari > Enable > dibagian kanan regedit
5. Klik ”Modify”
6. Pilih ”Y to enable”
7. RebootTweak ini adalah tweaking fav saya, karena akan komputer kita terasa lebih cepat. Tweaking ini membuang waktu delay ketika kita mengklik menu dan windows XP menampakkan Menu.
Mempercepat Loading Program.
1. Start > Run
2. Regedit > Ok
3. “HKEY_CURRENT_USER’Control Panel’Desktop’”
4. Pilih/Sorot “MenuShowDelay”
5. Klik kanan dan pilih “Modify”
6. Ketik angka “100″
Angka 50-150 adalah kisaran yg baik, bisa disesuaikan dengan Mood andaTweaking ini bisa berjalan untuk sebagian besar program. Jika program tidak mau loading seperti yg diharapkan, silahkan aja dikembalikan ke setting semula.
Mempercepat Shutdown Windows XP.
1. Klik kanan pada icon/shortcut yg berkaitan dengan program.
2. properties
3. Pada kotak “target”, tambahkan ”/prefetch:” diakhir kalimat.
4. Klik “Ok”
gampang kan, Program akan loading lebih cepat.Tweaking ini mengurangi waktu tunggu secara otomatis ketika windows sudah menerima instruksi untuk shutdown.
1. Start>Run
2. “Regedit” > OK
3. “HKEY_CURRENT_USER’Control Panel’Desktop’”
4. Sorot “WaitToKillAppTimeout”
5. Klik kanan dan pilih “modify”
6. Ubah value menjadi “1000″
7. Klik “OK”
8. Sorot “HungAppTimeout”
9. Klik kanan dan pilih modify
10. Ubah value menjadi “1000″
11. Klik “OK”
12. “HKEY_USERS’.DEFAULT’Control Panel’Desktop” sorot “WaitToKillAppTimeout”
13. Klik kanan dan pilih modify
15. Ubah value ke “1000″
16. Klik “OK”
17. “HKEY_LOCAL_MACHINE’System’CurrentControlSet’Contr ol’” sorot “WaitToKillServiceTimeout”
19. Klik kanan dan pilih modify
20. Ubah value menjadi “1000″
21. Klik “OK”
