SRF City

Posts Tagged ‘Computer’

Communications. I could barely spell the word, much less comprehend its meaning. Yet when

Mrs. Rubin made the announcement about the new club she was starting at the junior high school, it triggered something in

my mind.

Two weeks later, during the last month of my eighth grade year, I figured it out. I was rummaging through the basement, and

I ran across the little blue box that my dad had brought home from work a year earlier. Could this be a modem?

I asked Mrs. Rubin about it the next day at school, and when she verified my expectations, I became the first member of

Teleport 2000, the only organization in the city dedicated to introducing students to the information highway.

This was when 2400-baud was considered state-of-the-art, and telecommunications was still distant from everyday life.

But

as I incessantly logged onto Cleveland Freenet that summer, sending e-mail and posting usenet news messages until my

fingers bled, I began to notice the little things. Electronic mail addresses started popping up on business cards. Those

otherwise-incomprehensible computer magazines that my dad brought home from work ran monthly stories on

communications-program this, and Internet-system that. Cleveland Freenet’s Freeport software began appearing on systems

all over the world, in places as far away as Finland and Germany – with free telnet access!

   Read more...

One of the most prominent features of a computer is its monitor. Monitors are the basic requirement for any PC. The sizes of computer monitors vary, of course, according to choice and requirements. The standard size of all monitors is between 14 to 17 inches. It is a peripheral device that is used for viewing video output.

When initially introduced, computer monitors were much like cathode ray television screens – big, bulky and ugly. Now however, as times have changed, monitors have evolved into sleek LCD screens. They are also no longer black and white, but show images in thousands of bright, vivid colors. Essentially, a monitor only uses combinations of 4 to 16 colors, including red, green, cyan and yellow. Modern monitors also support LVDS and TMDS protocols. Another advantage with LCD screens is that an image looks the same from all angles, while in a cathode ray monitor one can view an image only when one’s facing the screen.

The working of a computer monitor is quite fascinating.

Computers control a video card that is used to format the output to make it appropriately compatible for a computer monitor. This, in turn, displays alphanumeric text characters and symbols such as icons, graphics such as images and video that are comprehensible to the human eye.  Read more...

Data erased deliberately or unexpectedly can be retrieved with the aid of data retrieval specialists. Computer forensics is helpful in identifying the root cause of the lost data or information.

Computer Forensics can be defined in many ways. Most commonly, computer forensic is a specialist aid that delves into detailed analysis of computers in order to execute the necessary tasks. It carries out the exploration of the retained and preserved data of the computer, identifies any damage that might have occurred to the computer and the root cause of the damage. The enquiry process begins right from scratch and goes further into the intricate elements of the computer’s operating system.

Computer forensic is a much wider conception and theory which investigates the transgressions upon computers by virus or cyber criminals. Several acts have been brought into force in order to monitor the criminal activities; yet there are a lot more that still exist. It is very difficult to uncover such activities due to lack of enough proof or substantiation. All these complex situations can be controlled with the assistance of computer forensics.

The key dictum of computer forensic specialists is to not simply find the illicit but to also find the facts and evidences. The arrangement of the substantiation is done in a manner that leads the criminal to face legal action.

Some Of The Illegal And Scandalous Activities In Computers Are:

* Unofficial utilization of computers by pilfering usernames and passwords.  Read more...

In 1958, Chaim Pekeris completed a landmark project in computer science. As a physicist at the Weizmann Institute of Technology in Israel, he become fascinated with the relatively new science of quantum mechanics and its potential to explain from first principles the behaviour of atoms.

There was a problem however. The equation developed by Schrodinger that could do the job was too complex for mere mortals to handle. Using it to determine the electronic energy levels of a even a lowly helium atom was seemingly impossible.

Chaim had an idea, however: why not exploit the incipient field of computer science to do the job.

Today, Christoph Koutschan and Doron Zeilberger analyse the work he carried out over several years and compare it to the approach that they would take to the problem today. It makes for interesting reading.

Chaim’s task was monumental.

He first had to persuade the Wiezmann Institute and a technical committee including Einstein and Von Neumann, to build a computer. Einstein proved hard to persuade but was eventually won over by Von Neumann.

WEIZAC, Israel’s first electronic computer was built between 1954 and 1954. According to Wikipedia, WEIZAC was an asynchronous computer operating on 40-bit words. Instructions consisted of 20-bits: an 8-bit instruction code and 12-bits for addressing. For a memory it had a magnetic drum that could store 1,024 words.

Today you’d get more processing power out of a washing machine.  Read more...

Analyze information to determine, recommend, and plan layout, including type of computers
and peripheral equipment modifications.

? Analyze user needs and recommend appropriate hardware.

? Build, test and modify product prototypes, using working models or theoretical models
Constructed using computer simulation.

? Confer with engineering staff and consult specifications to evaluate interface between
hardware and software and operational and performance requirements of overall system.

? Design and develop computer hardware and support peripherals, including central processing
units (CPUs), support logic, microprocessors, custom integrated circuits, printers, and disk
drives.

? Monitor functioning of equipment and make necessary modifications to ensure system
operates in conformance with specifications.

? Programming – Writing computer programs for various purposes.

? Troubleshooting – Determining causes of operating errors and deciding what to do about it.

About this Subject

Today in this digital world computer has the main role to do all sorts of jobs in each and every corner of the world .  Read more...