First generation - vacuum tube
Second generation - transistors
Third generation - integrated circuits
Fourth generation - microprocessors
Each generation reflected a decrease in hardware size but an increase in computer operation capabilities.
it varied significantly from computer to computer within each generation with large overlaps from generation to generation but the running trend has been for greater storage capacity in each successive generation.
First generation computers were built with vacuum tubes. The capabilities were about the same as that of modern computers, except limited by very small memories and slow speed. Typical first generation computer memory cost from $2 to $20 per byte equivalent, whereas today's computer memory costs less than a micro-penny per byte.
The first generation (vacuum tube) computers varied in size from machines the size of a large room that you walked around inside of down to machines the size of large office desks. The largest built was the SAGE air defence system's AN/FSQ-7 Combat Direction Central computer each of which occupied an entire floor of a large building.
They were better than a large room of hundreds of human computers, each with a mechanical desk calculator trying to solve the same problems. Seriously! In the 1930s and 1940s, aircraft manufactures designing new airplanes and insurance companies computing actuarial tables used to set policy rates did exactly this. Their problems did not fit well on then available unit record electromechanical punch card machines and were too big for one man to solve. Such companies grabbed up the first generation electronic digital computers of the 1950s as fast as they came out.
It means that with each so-called "generation", there was a major breakthrough in computers. Terms such as "fourth generation" or "fifth generation" are not clearly defined, especially for the later generations.
Each generation reflected a decrease in hardware size but an increase in computer operation capabilities.
growth of technology easy to maintaine
it varied significantly from computer to computer within each generation with large overlaps from generation to generation but the running trend has been for greater storage capacity in each successive generation.
It means that with each so-called "generation", there was a major breakthrough in computers. Terms such as "fourth generation" or "fifth generation" are not clearly defined, especially for the later generations.
which firm build fourth generation computers
Depends which model you are looking at, as with any manufacturer. The RAM will be shown in the specs for each model.
First generation computers were built with vacuum tubes. The capabilities were about the same as that of modern computers, except limited by very small memories and slow speed. Typical first generation computer memory cost from $2 to $20 per byte equivalent, whereas today's computer memory costs less than a micro-penny per byte.
Multi-threading is a programming model that allows computers to communicate with each other using the same resources, but work independently. This process became supported in the late 1990s.
look at the name tag on the gun
SPEC provide information technology services. They use a set of benchmarks suites that can be used to evaluate each new generation of high performance computers.
Multiplication (that's the name of the game and each generation they play the same!)