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- an analog computer cannot be more accurate than its component tolerances. this usually limits them to no more than 2 to 4 digits accuracy (although a few have been built with 6 digits accuracy by using special components with very tight tolerances. but such parts are quite expensive).
- a digital computer can have any accuracy desired simply by increasing the number of bits used to represent numbers.
also analog computers are subject to factors like drift, component aging, noise, etc. that have no effect on digital computers.
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What are the Applications of hybrid computer?
Solving problems that do not adapt well to solution entirely on a purely digital or purely analog computer that is available within the timeframe the problem arose and needs to be solved. Frequently the hybrid computer not only is capable of solving such problems, but is capable of solving them faster than they could be solved on a much more expensive purely digital or purely analog computer that theoretically could solve it, if such a computer was available at that time.
What is the difference between analog computers - digital computers - and hybrid computers - give examples of each type?
Analog computers are also called continuous computers, as there are no discontinuities in their computations. A mechanical analog computer might represent variables by rotation rate of shafts, any given shaft can rotate at any speed and will smoothly accelerate or decelerate its rotation as the calculation proceeds. An electronic analog computer might represent variables by voltages, say any voltage between -20VDC and +20VDC with voltages smoothly varying as the calculation proceeds.Bush differential analyzer at MIT, electromechanical, 1929.Norden bombsight, electromechanical, 1930s through 1960s (used in WW2, Korea, and Vietnam!).Various commercial electronic differential analyzers sold from 1950s through 1970s, electronic.Murray/Walker simultaneous equation solver, electronic, 1949.Vacuum operated cruise control in cars, mechanical/pneumatic.Resistor/capacitor 3D mesh water table models, electronic.etc.Digital computers on the other hand have discontinuous states that they jump from one to another.ABC: Atanasoff-Berry Computer, simultaneous equation solver, 1942ENIAC, late 1945UNIVAC IIBM 700 and 7000 seriesDEC VAXDesktops and laptopsBoth of the computers in your cellphoneetc.Hybrid computers are simply computer systems that combine both analog and digital computers together. Usually the digital computer controls the analog computer, reconfiguring it and entering new data each time the analog computer completes one problem, to have it solve a different one.Most were custom "one off" systems built by individual labs or universities by buying a standard COTS digital computer and a standard COTS electronic analog computer, and customizing them to work together as needed.One example of such a machine used a DEC minicomputer and an analog computer to model heat flow from a nuclear reactor fuel rod to circulating coolant. The analog computer was programmed on its plugboard to do a rapid solution through a single radial slice of the system, the digital computer was programmed to enter new parameters into the analog computer for each slice starting at the coolant entrance end of the fuel rod and collect and record the results of each slice. The machine could solve the problem to adequate accuracy much faster and more cheaply than an all digital system or all analog system of the time period.
How is analog computers are more powerful then digital computers?
Digital computer uses discretely coded numbers or symbols (typically in binary, although other codings like decimal and trinary have been used in certain machines). Changes in value are sudden jumps by at least the smallest representable value. Digital computers can incorporate error detecting and/or correcting circuits.Analog computer uses continuously varying signals. Changes in value are smooth and continuous. Analog computers drift with temperature, voltage, component aging, etc. and are very sensitive to noise; any of which can cause undetectable errors.
What is digital computer?
A computer that stores data in terms of digits (numbers) and proceeds in discrete steps from one state to the next. The states of a digital computer typically involve binary digits which may take the form of the presence or absence of magnetic markers in a storage medium (see memory), on-off switches or relays. In digital computers, even letters, words and whole texts are represented digitally. Unlike analog computers, digital computers can only approximate a continuum by assigning large numbers of digits to a state description and by proceeding in arbitrarily small steps.
What are some examples of analog computers?
abacus old-fashioned cash register (with gears and handle) gear-driven clocks/watches ---- Actually the above are examples of mechanical computers, not analog computers. Analog computers use continually variable quantities. An abacus uses discrete units of measurement and is digital, though not binary. A slide rule is an example of a simple mechanical analog computer. Another example is the Norden Bomb Sight. An ancient example is the astrolabe. More complex analog computers are programmable and can use fluid, mechanical, or electronically set values. There is a link below to an article on analog computers.
Is an analog clock more accurate than a digital clock?
Digital clocks will be the most accurate because its computer operated.
Who is more accurate analog or digital multimeter and why?
analoge
What is more accurate analog or digital?
Usually digital, it is definitely less expensive to get highly accuracy with digital then analog. Also analog haas drift, stability, etc. problems that digital does not have.
What are the advantages of digital stereo plotter over the analog type?
Digital stereo plotter is more accurate than the analog one in producing maps.
Is a digital electrical watch more accurate than an electrical analog watch?
Maybe
WHAT IS the differences between analog and digital sensors?
Digital sensors produce digital output (0 or 1) which can be easy to communicate directly with a microcontroller. Analog sensors provide analog outputs which one must firstly digitize to sense the level. Analog sensors are generally more accurate.
What are the advantage of digital multi tester?
Digital testers offer usually more testing options than an analog meter. They also tend to be more accurate in their readings.
How can you tell the difference between a digital sensor and an analog sensor?
Analogue sensors are usualy more accurate :P
What are the differences between a mounted digital kitchen scale and a standard analog kitchen scale?
The main difference between these scales it that the digital will give a more accurate and easier to read reading than figuring it out with the lines between the numbers the analog scale. However, the digital scale requires and battery and the analog does not.
Are digital phones as reliable as analog phones?
Digital phones are more reliable than analog phones. The digital signals are easier to produce and the technology is more reliable than that of analog signal.
Why digital and analog ground must be separated?
Digital GND has more noise than Analog GND. So never mix up Digital GND to Analog GND to avoid the coupling from Digital to Analog GND
What are the advantages of a digital radio over an analog radio?
The advantages of digital radio over analog radio are digital radios get more channels than analog, they are clearer in sound and signal and have more additional features.
