Server
abacus is one of the device that played role of computers in ancient times.
What sort of tasks are you refering to? is it manufacturing or databases or what?
a device that performs small retail trade in goods and services, payment and issuance of which is carried out with the help of technical devices that do not require direct participation of the seller.
computer
Arithmetic logic unit in the cpu
keyboard
A computer is defined as: A device that computes, especially a programmable electronic machine that performs high-speed mathematical or logical operations or that assembles, stores, correlates, or otherwise processes information. So, technically yes, they are both computers.
Services
A real machine is a physical device that performs mechanical tasks in the physical world. It operates based on principles of physics and mechanics to convert inputs into outputs. Examples include cars, washing machines, and computers.
router
Brouter
An antifuse is an electrical device that performs the opposite function to a fuse.