What is ALU???

Somebody want me to tell about What Is ALU ???

Short for Arithmetic Logic Unit, ALU is one of the many components within a computer processor. The ALU performs mathematical, logical and decision operations in a computer and is the last processing performed by the processor...

Once the necessary information by the ALU has been processed it is sent to the computer memory. In some computer processors the ALU is divided into two separate parts, the AU and the LU; in this case the AU performs the arithmetic operations and the LU performs the logical operations...

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What Is Computer???

Defination of computer is a device that accepts information (in the form of digitalized data) and manipulates it for some result based on a program or sequence of instructions on how the data is to be processed...

Complex computers also include the means for storing data (including the program, which is also a form of data) for some necessary duration. ..

A program may be invariable and built into the computer (and called logic circuitry as it is on microprocessors) or different programs may be provided to the computer (loaded into its storage and then started by an administrator or user). Today's computers have both kinds of programming.

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Cara Membuang Virus Atau Malware

Atas permintaan seseorang yang meminta cara mengatasi malware atau virus adalah seperti berikut:-

Satu langkah yang mungkin untuk menghapuskan virus yang wujud dalam Windows XP ialah penggunaan alat yang dikenali sebagai Pemulihan Sistem (System Restore). Alat ini memulihkan registri dan fail-fail sistem yang genting kepada titik semak yang dahulu...

Seringnya, sesebuah virus akan mengakibatkan sistem komputer tergantung, dengan pembutan semula keras akan merosakkan titik pemulihan sistem daripada hari yang sama. Titik pemulihan daripada hari-hari sebelumnya harus masih berkesan, asalkan virus itu tidak direka untuk merosakkan fail-fail pemulihan. Bagaimanapun, sesetengah virus, misalnya virus CiaDoor, akan mematikan pemulihan sistem serta alat-alat lain yang penting seperti Pengurus Tugas (Task Manager) dan penggesa..

Virus mengubah suai registri dengan cara yang tepat sama dengan para pentadbir mematikan alat-alat tersebut atas berbagai-bagai alasan daripada pengguna-pengguna terhad, kecuali bahawa virus menyekat semua pengguna, termasuk juga pentadbir. Apabila sesuatu alat terjangkit diaktifkan, virus itu akan memaparkan pesanan, "Pengurus Tugas telah dimatikan oleh pentadbir anda", walaupun jika pengguna yang mencuba memulakan atur cara adalah pentadbir pada dirinya.

Selain itu, penggunaan malware removal atau antivirus amat penting bagi mengelakkan kerosakan sistem computer akibat serangan virus. Untuk mengelakkan jangkitan virus,spyware dan malware anda bolehlah membaca tentang tajuk Punca Dan Kesilapan Yang Menjemput Malware di muka hadapan blog.

Berikan pendapat atau komen selepas anda membaca maklumat di atas. Sekian,terima kasih.

Punca Dan Kesilapan Yang Menjemput Malware

Malware berasal daripada perkataan malice dan software merujuk kepada perisian yang direka bagi membolos atau merosakkan sistem komputer tanpa kebenaran secara jelas daripada pemilik...

Jangkitan malware boleh berlaku jika anda mengunjungi tapak web yang menawarkan bahan - bahan negatif. Atau , jika anda menggunakan aplikasi yang dikaitkan dengan bahan negatif...

Berikut adalah punca dan kesilapan yang mengundang malware:-

• Bahan berunsur porno
• Movie dan muzik haram (MP3)
• Perisian cetak rompak
• Perisian ' peer - to - peer' (P2P0
• Asakkan iklan internet
• Perisian sekuriti palsu
• Perisian percuma berisiko
• Tapak web dan skrip merbahaya
• Kesilapan pengguna emel
• Kelalaian pengguna PC

Setelah mengetahuinya, anda perlu mengambil langkah proaktif yang relevan...

Sila berikan komen jika terdapat sebarang kesilapan dan kesalahan fakta diatas.

History Of Computer

Yesterday, i had told to you about information computer but today i want to tell about History Of Computer.It is difficult to identify any one device as the earliest computer, partly because the term "computer" has been subject to varying interpretations over time...
Originally, the term "computer" referred to a person who performed numerical calculations (a human computer), often with the aid of a mechanical calculating device.

The history of the modern computer begins with two separate technologies - that of automated calculation and that of programmability.
Examples of early mechanical calculating devices included the abacus, the slide rule and arguably the astrolabe and the Antikythera mechanism (which dates from about 150-100 BC).

Hero of Alexandria (c. 10–70 AD) built a mechanical theater which performed a play lasting 10 minutes and was operated by a complex system of ropes and drums that might be considered to be a means of deciding which parts of the mechanism performed which actions and when.This is the essence of programmability....
The "castle clock", an astronomical clock invented by Al-Jazari in 1206, is considered to be the earliest programmable analog computer. It displayed the zodiac, the solar and lunar orbits, a crescent moon-shaped pointer travelling across a gateway causing automatic doors to open every hour,and five robotic musicians who play music when struck by levers operated by a camshaft attached to a water wheel...
The length of day and night could be re-programmed every day in order to account for the changing lengths of day and night throughout the year.
The end of the Middle Ages saw a re-invigoration of European mathematics and engineering, and Wilhelm Schickard's 1623 device was the first of a number of mechanical calculators constructed by European engineers.
However, none of those devices fit the modern definition of a computer because they could not be programmed...

Informotion About Computers

If you want to know detail about computer, i will tell about it...
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.Modern computers are based on tiny integrated circuits and are millions to billions of times more capable while occupying a fraction of the space.

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 and that all for today. Thank you.

Disadvatanges Of Using Mobile Phone

Since the introduction of mobile phones, concerns (both scientific and public) have been raised about the potential health impacts from regular use...
But by 2008, American mobile phones transmitted and received more text messages than phone calls...
Numerous studies have reported no significant relationship between mobile phone use and health, but the effect of mobile phone usage on health continues to be an area of public concern...
For example, at the request of some of their customers, created usage controls that meter service and can switch phones off, so that children could get some sleep...
There have also been attempts to limit use by persons operating moving trains or automobiles, coaches when writing to potential players on their teams, and movie theater audiences....
By one measure, nearly 40% of automobile drivers aged 16 to 30 years old text while driving, and by another, 40% of teenagers said they could text blindfolded..

My New Blog

Now i has one weblog.
My teacher suggest to start blogging..
thanks to him for teaching me to start blog..
And now i am blogger..
That all for today.