I purchased and used an Ohio Scientific in 1978 for personal and business purposes. Here is a partial list:
C8P DF GT
Microprocessor - 6502C 4Mhz. (GT option)
Ram - 48k 150ns. (GT Option)
Disk - 2- 8" floppies each 170k
I/O Video Board 64 x 32 Colors
1-RS232 Port (Software addressable to 2 connectors)
Sound Output
Home Security Interface BSR Remote control
Hi Speed DAC C8P-DF-48k
2 Joystick Inputs GT Option
Expansion Serial RS232 Board CS-10-2
48 Line Parallel I/O CA-21
D/A, A/D CA-22
16 Channel input multiplex to one A/D
2 D/A
6 TTL Input
2 TTL Output
Serial Terminal AC-07C
Haziltine 1420
Total Price $7,815.00
Lots of software.
OS-65D V3.2, OS-65U V1.2, HC-1, HC-2,Graphics 1, Plot Basic, DAC1,PD 1-2, ED 1-4, BD 1-3, GD 5-10, WP6502U, WP3-2, WP3-1, OS-DMX, OS-Inventory, OS-DMS, OS-65U V1.42 - CD74 CD-36 MOS for Business, Demo Disk, Customer Demo, Dealer Demo.
I used the system for word processing and BASIC development for the company I worked for. I programed a customer equipment reception, tracking, and billing system. This required hacking the OS to remove the 'LF' at the end of each write to the serial terminals so the text could be kept at the same location and be updated. Great fun.
I sold this system to my nephew in 1984 after purchasing an IBM PC with an after-market 5 meg HD by Devong. I had to keep a floppy in the floppy bay for the computer to boot to the HD. I couldn't believe all the room I had to store stuff in. It was so nice not to have to swap floppies all the time anymore. Four years later it was an IBM XT with a 10 meg HD, two years later I upgraded the HD to 20 meg. Then I moved on to after-market PC's. One from some place in Texas, then another from Micron that I had for years. Then I started to build my own computer for myself and firends. I am on my fourth rebuild now and am starting to get itchy to upgrade again.
William