An Epson they had stacks of at Best Buy. (1990ish) Cost about a grand and had a 2 MB hard drive. Definitely doesn't get the oldest computer award. As a student, first one used was an Apple 2E.
Spectrum 48 and always envied those cool C64 games for the fancy color and sound. then moved to spectrum 128! Ye baby!
Times Sinclair 1000 followed by the Commodore 64 from Crazy Eddie's in the Bronx I still have both, and they both work.
My bad, I/O errror, read "10," processed "11." Agreed, the 10 was successful. But, it wasn't the first commercial timesharing system. That goes to Dartmouth TSS which ran on the GE-200 series mainframes.
Hold on! Just because it used LSI to shrink the processor down to 4 chips did not make it a microcomputer. The difference between a micro and a mini had nothing to do with size. It was all about the difference in processing power and an I/O bus that could support multiple users simultaneously via separate consoles. What killed the PDP-11 series was the 16bit architecture. The writing was already on the wall when the 32bit 68K came out in '79.