Rabu, 19 November 2014

64-bit microproccesor



Sixty-four-bit processors have been with us since 1992, and in the 21st century they have started to become mainstream. Both Intel and AMD have introduced 64-bit chips, the Mac G5 sports a 64-bit processor. Sixty-four-bit processors have 64-bit ALUs, 64-bit registers, 64-bit buses and so on.

One reason why the world needs 64-bit processors is because of their enlarged address spaces. Thirty-two-bit chips are often constrained to a maximum of 2 GB or 4 GB of RAM access. That sounds like a lot, given that most home computers currently use only 256 MB to 512 MB of RAM. However, a 4-GB limit can be a severe problem for server machines and machines running large databases. And even home machines will start bumping up against the 2 GB or 4 GB limit pretty soon if current trends continue. A 64-bit chip has none of these constraints because a 64-bit RAM address space is essentially infinite for the foreseeable future -- 2^64 bytes of RAM is something on the order of a billion gigabytes of RAM.

With a 64-bit address bus and wide, high-speed data buses on the motherboard, 64-bit machines also offer faster I/O (input/output) speeds to things like hard disk drives and video cards. These features can greatly increase system performance.

Servers can definitely benefit from 64 bits, but what about normal users? Beyond the RAM solution, it is not clear that a 64-bit chip offers "normal users" any real, tangible benefits at the moment. They can process data (very complex data features lots of real numbers) faster. People doing video editing and people doing photographic editing on very large images benefit from this kind of computing power. High-end games will also benefit, once they are re-coded to take advantage of 64-bit features. But the average user who is reading e-mail, browsing the Web and editing Word documents is not really using the processor in that way.

source: http://howstuffworks.com/microprocessor6.htm

Minggu, 16 November 2014

OSCILLOSCOPE










Oscilloscope is a measuring instrument which can show us the "shape" of the electrical signal by showing a graph of voltage versus time on the screen. It was like a voltmeter with extra function, how the voltage varies with time, a graticule every 1 cm grid allows us to make measurements of voltage and time on the screen (the screen).

Oscilloscope consists of two parts:  
Display
Display resembles display on a television screen. Oscilloscope display on the display serves as a test signal. On the Oscilloscope Display transverse stripes are vertical and horizontal form boxes called div. Horizontal axis represents time and the vertical axis represents voltage.
Control panel
The control panel contains buttons that can be used to adjust the display on the screen. The buttons on the panel of the oscilloscope, among others:

     Focus               : Used to adjust focus
     Intensity           : To adjust the brightness of the lines displayed on the screen
     Trace                : Adjusting the tilt axis line Y = 0 in the screen
     Volt / div          : Set the value of voltage is represented by a div on the screen
     Time / div         : Set the value of time is represented by a div on the screen
     Position            : To adjust the normal position of the X axis
     AC / DC           : Set the function of the coupling capacitor
 
However, if the button is placed on the DC position, the signal will be measured by its DC component :
     Ground           : Used to view the location of the ground position on the screen.
     Channel ½      : Select the channel / channels are used.

In general, the oscilloscope consists of two channels (Dual Trace) that can be used to view two different signals, for example, channel one is installed to see the input signal and channel two to see the output signal.

Minggu, 09 November 2014

The League of Extraordinary Gentlemen








The film adaptation of the comic is a classic film that tells the story of hero figures-but-not-famous superheroes and combine to form a group called, 'The League of Extraordinary Gentlemen'.

About the characters used :
Allan Quatermain, he was the hero of the UK with operations in South America. Afterward, they used to live in Africa because there father had divorced. Captain Nemo, he was captain of the famous ship, Nautilus. He is a prince from India who is a genius with a variety of technologies. He also hated the British soldiers because they killed the ship. Mina Harker, cross-eyed girl is a vampire and can turn into a bat that also cross-eyed. She is a widow lady and vampire blood is a curse given to him.Rodney Skinner, was human invisibility (invisible) who work for the government and assigned to look for a potion to make him invisibility. In the end he drank the potion for himself.Jekyll & Hyde, the main fact is Professor Henry Jekyll. But he suffered a breakdown of the personality so as to form a very different personality from her, namely Edward Hyde. In this film they can finally rely on each other.Dorian Gray is a handsome immortal beings (very handsome) - and narcissistic. Actually he is an ordinary man, but he then transformed himself become immortal with a painting of himself so that aging is the painting.Tom Sawyer, is a secret agent of the US envoy to help eradicate the evil of Allah et al (terror) that occurred. The only bad properties owned since childhood is sloppy. But he remains a hero who always wonder, and Mr.M, I do not really know much about this character, but certainly in this film it was he who made the league. At the end of the story can be seen that he actually has an antagonistic role.

The story is simple, the world is siteror by a group of criminals led by Fantom. It has advanced technology and a thirst for power. Therefore, he tried to lure a group to fight with Allan. Allan initially uncooperative with M, but because of the sudden attack that hit him he eventually joined. Starting with Skinner, Mina, and Nemo, the four of them went to recruit key people such as Dorian. Dorian at home, suddenly they are attacked by a group Fantom. But Dorian said that it was not his move. There too, they met with Tom Sawyer.

After that they were to Paris to catch the changing Jekyll into Hyde. Moments, they began to smell a traitor, because Nemo found dust from the camera in the steering his ship. After that continue to Skinner lost, until they find the real traitor.

They also raided a factory that made the Fantom. The war began with a fierce, coupled with the arrival Skinner proved that it was not he who was the traitor. Allan shared Sawyer against Fantom, Nemo and Jekyll united release of the hostages, destroy buildings Skinner, and Mina against Dorian who turns traitor. Fantom itself, it is Mr.M who wanted blood samples from Mina and Skinner, potion of Jekyll, and design technology of Nemo. While Dorian, wants to live longer and prosper. Although they succeeded in the end, but the hero is not a god. Allan Quatermain died from knife from Fantom and Fantom itself eventually killed by Sawyer. But at the end of the movie, the people of Africa do a ritual to the grave Allan. And it can be seen that a very loud vibrating grave Allan (allowing that Allan could not die, since the people of Africa have expressed promise that they will not let Allan die).

Well, how? Exciting is not it? Hehehe sorry if the review is a bit stiff and the bad, because I am also not so well anyway on their way wkwkwk But definitely this film a combination of several individual stories smoothly if you want their stories to be read one at a time hahaha: D
If curious, immediately wrote watch the movie! Guaranteed not gonna be disappointed! Seriousness ya!



QUESTION

1. who is the person that try to convince Allan Quaterman in Kenya ?
    answer :  
     Allan Quartermain is sought out in Kenya by a British agent sent to persuade

2. who are the member of that extradionary group? explain their special !
    answer :   
     Allan Quaterman is a former great hunter and adventurer in Africa, he's now an old 
     opium- addicted man.As the League's story moves on, his old passion and spirit for 
     adventure comes back to life.

3. discribe protogonis and antagonis character ?
    answer :
    protagonis : Allan Quartermain, , Captain Nemo, Mina Harker, Rodney Skinner, Tom  
                       Sawyer, Jekyll & Hyde
    antagonis  : Mr.M , Dorian Gray
    explanation of characters already exists in synopsis.