It may be any size, this register is use according to requirement of micro processor.
Special Purpose: Special purpose computer are used for only specific or perticular task.Mostly computer are used by doctors. Like ECG computer are any computer which used for surgery. Some special computer are used for weather controlling or weather research, some used by army for deffence purpose.
There are either special-purpose or general purpose computers.
embedded computer
1.Special purpose computer General Purpose Computer
general purpose, as it can be programmed to perform any special purpose task.
Special purpose memories are areas that offer storage capability for computer data that has a unique purpose. This is an embedded system within the computer that has its own unique language and design tools available to the user.
The special purpose of the operating system is to manage the computer hardware resources. The operating system also provides common services for the computer programs.
Computers can be classified into general purpose and special purpose computers. General purpose computers can be applied to a variety of tasks while special purpose computers are molded to suit a particular task.
the special use for a pc is that you can do your homework,play games and do research
The purpose of the small form factor is to make a desktop computer appear smaller in size. It is a computer form factor which can be used for this purpose.
Computers are classified by a number of aspects. By purpose/functionality they are classified into special and general purpose. By size they are classified into mainframes, mini computers, desktops and portables. Historically, the more recent generations of computers were smaller in size and more general-purpose than their predecessors.
Microcontrollers are special-purpose computer systems, usually programmed to perform a single task.