You children are so funny.

I bet most have never seen what I first used, a teletype with round keys. I think attached to an early PDP 11???
I missed using paper tape and card readers by a matter of months. Cassettes tapes were state of the art.
The first system I administered in I think 1980 was an IMSAI that you had flip the switches on the front to set the firmware start location and hit the start switch. I think the one I worked on had 16K RAM for 4 dumb terminals.
Check out the rocking specs.
Announced: August 1975
How many: Around 20,000
Price: US $931 assembled
US $599 as a kit
CPU: Intel 8080A, 2.0 MHz
RAM: 64K max
Display: front panel LEDs
Controls: front panel switches
Expansion: card-cage w/ S-100 bus
Storage: optional cassette or
floppy drive
OS: CP/M, BASIC