Computer science is, in comparison to most sciences, a relatively new field starting as early as the 1930’s for military based projects and eventually adapting in the early 1980’s to the personal computers we have today. If we were to look into a “brief history of computers starting with the 1950’s we would see huge series of cathode tubes and switches taking up entire rooms. These computers were designed for military intelligence and predominantly comprised of computing long calculations run by paper punch cards and manual switches.” (Ceruzzi pg. 28)
A computer is an electronic device that stores, retrieves, and processes data, and can be programmed with instructions. A computer is composed of hardware and software, and can exist in a variety of sizes and configurations. Hardware is the physical equipment of a computer system, including the central processing unit (CPU), data-storage devices, terminals, printer, etc. Software is a program or set of instructions or rules that control the operation of a computer.
The origin of the computer resides with the military. The computer itself was created by the military during the Cold War era, when we were in a technological race with Russia. This race was the fuel for massive advancements in technology especially in the sector of computer intelligence. The first Computer’s were physically large enough to fill an entire room. They were used to manage large quantities of data in textual and numerical form. The government backed certain research facilities in the advancement of the computer and some investigated and experimented in computer technology with art and music. 1
Smartphones, the pocket-sized computers are becoming increasingly popular. This year for my birthday I received my very first smartphone; I can finally understand why people are always on their phones. The invention of the smartphone has helped improve human lives in many ways; "By the end of this year there should be about 1,859.3 millions of smartphone users worldwide" (Statista). The number seems to just keep getting larger. Smartphones have everything people need in just one little device which people can take everywhere; digital camera, web browsing, Global Positioning System (GPS), media player, and a broad set of apps available to
DOS is the basic system that people have to using Command line prompt to communicate with computer via simple interface which is not “friendly” user interface.
Software can be defined as any program or operating information used in a computer. Software is written by programmers who arrange and organize it in a careful instructions and codes. Software engineering is an engineering field which deals with designing and writing computer programs and different electrnic devices. In software engineering software’s are written and compiled in a way to make them better and efficient. Software engineering is important because it makes quality software’s which are easy to use and meets the expectations of a customer.
Software is the recording of information onto a form such as a disc. The information is programmed into
Ockham, Surrey County, England, the Summer of 1843. Lady Ada Lovelace frantically prepares her “Notes” to Sir Charles Babbage. This 19,136 words document will hold the first description of the term “computer” a century before this idea will come to fruition.
Computer is a machine that runs with user interface to compute a given task. Computers are built up of hardware and software components that are used to operate the computer. The main components of computer work hand in hand thus, making the computer to perform and execute tasks. The required hardware components of computer are:
Systems software includes the programs that are dedicated to managing the computer itself, such as the operating system, file management utilities, and disk operating system.
Operating systems and application software are essential in the running of computers. The operating system is the most important piece of software on a computer. It controls the computers software/hardware, memory and processing. It also allows the user to control the computer without knowing its operating language. An example of an operating system is Mac OS X. Application software is often designed for a specific purpose such as word processing, Web browsers or spreadsheets etc. These applications can often be used to do other jobs than just the one intended. For example you could use word to edit photos but this is not the applications intended use, so it will not have advanced image-editing features which a program like Photoshop would
System software:The programs that control and manage the basic operations of a computer are generally referred to as system software. System software typically includes the following types of programs: operating systems, utility programs, software development
* Software: The term software refers to computer programs and the manuals (if any) that support them.
Computers play a key role in almost every sphere of life. They facilitate storage of huge amounts of data, they enable speedy processing of information and they possess an inbuilt intelligence, which if supplemented with human intellect, can work wonders. Owing to their intelligence and speed, computers function on a level close to that of the human brain. Computers can hence be employed in different fields like engineering, data processing and storage, planning and scheduling, networking, education as well as health and medicine. You might want to take a look at the various uses of computers, before looking at the importance of computers in medicine.
The first ever computer was invented in the 1820s by Charlse Babbage. However the first electronic digital computer were developed between 1940 and 1945 in the United States and in the United Kingdom. They were gigantic, originally the size of a large room, and also need to be supply a large amount of power source which is equivalent as several hundred modern personal computers. The history of computer hardware covers the developments from simple devices to aid calculation, to mechanical calculators, punched card data processing and on to modern stored program computers. The tools or mechanical tool used to help in calculation are called calculators while the machine operator that help in calculations is called computer. At first the