Electronic computer 1. The computer that is invented depending on the electronic method is called electronic computer. 2. ENIAC is the first electronic computer. 3. Electronic computers were first invented in 1947. 4. Fast done. 5. Lots of data capacity. . An electronic circuit with a vacuum tube and a logic gate are used. Electromechanical computer 1. The computer that is invented by combining both electronic and mechanical methods is called electromechanical computer. 2. The Mark-1 is the first electromechanical computer. 3. The electromechanical computer was first invented in 1944. 4. Slow motion done. 5. A limited amount of information can be contained. . Made up of a combination of different valves.