How Many types of Computer System?
There are many types of computers systems listed below:
Analog computer
An analog computer or analog computer is a computer that uses constantly changing physical phenomena (such as electrical, mechanical, or hydraulic quantities) to simulate problems in order to solve them.
In contrast, digital computers symbolically represent variables, represented by discrete values of time and amplitude.
Analog computers can have a very wide range of complexity.
Slide rules and nomograms are the simplest, while naval fire control computers and large-scale hybrid digital/analog computers are the most complex.
Process control and relay protection systems use analog calculations to perform control and protection functions.
Even after the advent of digital computers, analog computers were widely used in scientific and industrial applications because they were generally much faster at the time, but they were outdated as early as the 1950s and 1960s, although they continued to be used for some specific applications.
For example, aircraft flight simulators, aircraft flight computers, and university teaching control systems.
More complex applications, such as aircraft flight simulators and synthetic aperture radars, were still the domain of analog computing (and hybrid computing) until the 1980s because digital computers were not sufficient for calculations.
Digital computer
In computer science, a digital electronic computer is a machine that is both an electronic computer and a digital computer.
Examples of digital electronic computers include the IBM PC, Apple Macintosh, and modern smartphones.
When digital and electronic computers appeared, they replaced almost all other types of computers, but historically, calculations have been performed in various non-digital and non-electronic ways: Lemmer Sieve is an example of non-electronic digital computers.
An analog computer is an example of a non-digital computer that can be electronic (with analog electronics), and a mechanical computer is an example of a non-electronic computer (which can be digital or not).
The ancient Antikythera mechanism found in Greece is an example of a computer. It is not an electron, but a number.
All types of computers, whether digital or analog, electronic or non-electronic, can be Turing complete as long as they have enough memory.
Digital electronic computers are not necessarily programmable computers, stored-program computers, or general-purpose computers, because, in essence, digital electronic computers can be built for specific applications and cannot be reprogrammed.
As of 2014, most personal computers and smartphones that use multi-core central processing units (such as AMD FX, Intel Core i7, or ARM-based multi-core chips) in people and families are also parallel computers.
Instruction Multiple Data Paradigm), a technology previously only used in digital electronic supercomputers.
Hybrid computer
A hybrid computer is a computer with the characteristics of an analog computer and a digital computer.
Digital components are usually used as controllers and provide logical and numerical operations, while analog components are usually used as solvers for differential equations and other mathematically complex equations.
The first hybrid desktop computing system was Hycomp 250, released in 1961 by Packard Bell.
Another early example is the HYDAC 2400, a hybrid computer released by EAI in 1963. In the 1980s, Marconi Space and Defense Systems Limited (under the leadership of Peggy Hodges) developed their Hybrid & Starglow computer, consisting of three simulated EAI computers.
The 8812 is connected to the EAI 8100 digital computer, and it is also connected to the SEL 3200 digital computer.
In the late 20th century, as the power of digital computers (including digital signal processors) increased, hybrid power gradually weakened.
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