King Info Life | Application Development
The computer’s brain is considered to be the central processing unit or CPU for many people, but the analogy is not inaccurate, because the human brain can do so much more than the CPU. The purpose of the CPU, is to process the needed information inside of a computer, in order to make that computer functional. The processing unit has several different components, which help the CPU perform steps, which can happen independently of each other.
The computer forensics field, has helped the justice department lock up a lot of offenders, and as technology advances criminals, find it very hard to hide or delete incriminating data from a computer. The computer forensics field has transformed the justice system, because the idea of investigating, digital media, gives law enforcement, the ability to use digital files and media as evidence, in a court of law.
The process which reduces data sizes, by removing excessive information is known as data compression. The size of a file is reduced, in order to save space, save time and reduce redundancy, during compression. A number of data compression algorithms exist, in order to compress different types of data formats. All the images we see online, are typically compressed in the JPEG or GIF formats, and file systems also compress files automatically. When files are stored and for those large files, that don’t automatically get compressed, we do it ourselves.
In order to be able to convert a decimal number to binary, one must have a basic understanding of the decimal, binary and hexadecimal numbering systems. Decimal numbers are used often in mathematics, and are 10 digits (0 - 9), which occupy a decimal place. Binary numbers are 1s and 0s to us, but to computers the number one represents the high or on setting and the number zero, would mean low or off setting in a computer. Binary is used in order to represent computer data, and it can be grouped together into bytes.
On the article written by Hobbs and Petit, they explain that the agile software development methodology, has been gaining popularity, since the 2000s, and have taken software development by storm. In an agile environment, small collocated teams, work on small, non- critical, green field, in-house projects, this was identified by Kruchten as the “agile sweet spot”. The architecture of these projects is stable, and the rules of governance are simple; therefore, the agile methodology is being used more and more on larger projects, according to Hobbs and Petit.
The development phase of an application, have always followed a waterfall method, but later the agile method was also adopted. As one of the oldest methods used, to develop a software, the waterfall methodology, remains the most used among software engineers and developers. Developers and software engineers, follow a sequential model, which goes downward, going through different phases, when they use the waterfall method. Requirement gathering and analyses, design, coding, testing and maintenance, are the phases, which are part of the waterfall methodology.
Symbols can be manipulated through machines known as computer systems, which are functional computers with all its hardware and software, made to help users achieve their goals, complete tasks and solve problems.
Computer systems can be categorized based on a variety of factors however on this post, I will use the size and the power of the computer systems to categorize this list.
Computer systems can be categorized as follows, from the largest and most powerful computer systems to the smallest and least powerful computer system we use today:
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