Computer Systems

 

 

PDA

A personal digital assistant (PDA), also known as a palmtop computer, or personal data assistant, is a mobile device that functions as a personal information manager. PDAs are largely considered obsolete with the widespread adoption of Smartphone’s. Companies use it because it is easy to access to the internet almost anywhere.

 

Tablet

Tablet computer, a kind of mobile computer, usually having a touchscreen or pen-enabled interface

 A tablet personal computer, a class of tablet which runs an adapted version of a desktop operating system. Companies use it because its portable you can store documents on it video images and more just like on the phone
access to the internet and its easy to carry about.

Pc

PC most commonly refers to ‘’Personal computer’’, a computer whose original sales price, size, and capabilities make it useful for individuals. Companies use it to do their work,save files,create images,make videos/edit videos do things work on it like spreadsheets and use it for alot of things internet access etc...

Server

A server is a system (software and suitable computer hardware) that responds to requests across a computer network to provide, or help to provide, a network service. Servers can be run on a dedicated computer, which is also often referred to as "the server", but many networked computers are capable of hosting servers. In many cases, a computer can provide several services and have several servers running.

 

Servers operate within client-server architecture, servers are computer programs running to serve the requests of other programs, the clients. Thus, the server performs some task on behalf of clients. The clients typically connect to the server through the network but may run on the same computer. In the context of Internet Protocol (IP) networking, a server is a program that operates as a socket listener. Companies mostly ''big companies'' need server because the computers usualy doesnt have enough space on the computer and there might be atleast 10 people or more using one computer with diffrent log in so that why they need servers so they can have loads of diffrent users on the same computer.