The Main difference between a computer and a machine that computer is an intelligent device which has the ability to decide by its own through processing different data analysis while machine is least intelligent and is always waiting for user
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Computers differ form each other by having different OSs (operating systems) GUIs (graphical user interface - a program that allows you to "communicate" between the computer and you) and hardware. The hardware in a MAC is a lot more advance and smaller than it's rival the PC.
Although they all collect, search and store data, some computers are tasked with specific capabilities like running robotic assembly lines or used strictly in business applications. Some work as servers, interfacing other machines at an office perhaps.
Some have more memory than others, others have faster and more powerful CPU's, larger screens, etc. Other computers are "slave units" that reside on a network and have no internal disk drive and basically used to interface a keyboard, mouse and monitor within a local area network.
Brand names are aplenty ... people have preferences based upon their experience with brand A or brand B, and then there are Windows based machines and Mac based machines. It's all personal preference.
By its ability to store information and retrieve it at a later time.
Assuming that computers a subset of the higher class of "computing devices" then the first question is what belongs in the computing devices higher class that doesn't belong in the computers subclass. It's difficult to say because everything that belongs in the computing devices class could be classified as a "computer" as well, because it computes by definition of being a computing device. Typically when we refer to computers, we specifically mean main frame computers, mini-computers, or personal computers. We don't typically mean cell phones, calculators, or personal data assistants (PDA's) though all of these undoubtedly compute. What distinguishes computers from these devices, in general, is their ability to be programmed to do custom tasks that they were not originally developed to do. Most of the other computing devices can not be programmed in and of themselves to do other tasks they were not originally designed to do, however there are exceptions. Cell phones can run custom applications (though you cannot typically write the applications on the cell phone itself. The same goes for PDAs and calculators. Some of the more complex calculators are not unlike some of the first personal computers in their ability to be programmed, but their programming power is rather limited. In short, computers can be programmed, but so can many of the other computing devices, but still it does distinguish them from many of the other computing devices because ALL computers can be programmed, whereas only a subset of the other computing devices can be programmed.
Computers, printers and other machines are cooled from these cooling systems.
Embedded computers
Docking stations are needed for older computers that have a need to connect to various other hardware devices like printers, fax machines, and mice.
Phones, computers-anything where people can talk to each other.
Infrared (IR) can be used by computers and other electronic devices to transfer data to other devices short distances.
That sounds like the description of a computer - or the CPU that controls it. The term "computer" encompasses desktop and laptop computers, but also cell phones, routers, switches, tablets, and probably several other devices that are not normally thought of as computers.
Stores that sell computers and other electronic devices.
hotspot
You can wireless connection.
In MS Windows, you look in the Network Neighbourhood for any and all machines on your network, including other computers, routers, printers and so on.