Both. Overall, computers are generally referred to as electronic devices but they are a combination of electronic and mechanical parts. The most common hard drives read a magnetic storage disc mechanically, though the new solid state drives that are taking over have no moving parts. Optical drives, CD/DVD, have mechanical parts to read the disc and the cooling fan is mechanical as well. I suppose a computer with a solid state drive and no optical or floppy disc drive or fan could be nearly totally electronic.
The abacus, also called a counting frame, is a calculating tool used primarily in parts of Asia for performing arithmetic processes
Built by IBM, the electronic numerical integrator and computer, or ENIAC, weighed 30 tons and spanned 1,500 square feet. This huge machine used 18,000 vacuum tubes for storage and arithmetic calculations.
Parts of it are at The Computer History Museum in California. http://www.computerhistory.org
Their family business was the manufacture of electrical parts
hardware
There are different kinds of sensors and guages which measure pressure. The first ones were mechanical. The next generation were a combination of mechanical and electrical parts, and now, some pressure detecting systems have no moving parts, and are totally electronic.
A machine is any device that is used to make work easier while an electronic device is one that uses transistors and other electrical components rather than moving parts (mechanical). A computer operates using electrical components to make the work of processing data easier.
Mechanical components are components with primarily moving parts, like the fan in a computer, or gears in an industrial machine. Electronic components are ones primarily unmoving, but with complex computer parts, like the motherboard of the computer, or the logic board in the industrial machine.
The mechanical parts of a computer are included in the definition of the computer hardware. The mechanical parts are those working parts of the computer. It does not include the case, frame, and electronic components. That leaves the components involved in mechanical activity. The parts that move. That includes the switches, buttons, relays, cooling fans, hard disk drives and optical drives that spin and have read/write heads that can move back and forth across the disk surface. It also includes printers, scanners, speakers and headphones or their internal vibrating parts.
The electro-mechanical period refers to a time in history during the mid-20th century when technology began to shift from purely mechanical systems to incorporate electrical and electronic components. This period saw the development of early computing machines that combined mechanical parts with electrical circuits to perform calculations and automate tasks. It laid the groundwork for the digital age and the widespread use of electronic devices in various industries.
In an electronic switch there are no mechanical/moving parts - the switching action is achieved entirely within the electronic components. Electronic relays are generally a mechanical switch controlled by electronics.
Electrical energy to Mechanical energy
The computer is almost entirely electronic without moving mechanical parts. Moving mechanical parts are much less reliable and fail more frequently than modern solid state integrated circuit electronics.
The only "mechanical" (aka moving) parts in your computer are your CD/DVD drives and Hard drives. RAM, Processor, and all other nifty doodads do not have any moving parts. Fans inside your computer are also physical mechanical.
Oldest still in use?Oldest still working, but not used?Oldest complete, but not working?Oldest portion of a computer that at one time was used?Oldest computer that we have documents for but no parts?Oldest computer historically recorded, but lacking parts and documents?Oldest computer not recorded in history, but for which incomplete parts or documents have been discovered?etc.?What are you looking for? "Oldest" needs clarification.Also what kind: digital, analog, hybrid; electronic, electromechanical, mechanical?
The term "simple" and "compound" machine refer to physical devices that transform work. The computer is an electronic device whose main operation has no moving parts whatsoever. Any motion within input and storage devices is controlling electrical components, not mechanical ones.