What are the disadvantages of traditional computers?

It takes up space, is inconvenient to carry and consumes a lot of energy. The traditional computer box is large, which requires higher specifications for power supply and radiator. The disadvantage is that it takes up space, is inconvenient to carry and consumes a lot of energy. Computer is a kind of modern intelligent electronic equipment that can run according to the program and automatically process a large amount of data at high speed.