QDP-100

YEAR: 1980
ITEM: Digital Computer
COMPANY: Quasar Data Products
COUNTRY: USA
IN OUR COLLECTION: Yes
This rare computer offered two horizontally mounted 8" drives. There is not much information on this computer. It ran on a Z-80 CPU and was sold with a C/PM 2.2 disk operating system. It is heavy...over 50 pounds. The computer came with two floppy disks. The one in the A drive was marked Master Disk QDP and the one in the B drive was marked
1024 kbytes/Sec CLA.cuu
Back-up disc for form & CU's
According to a Quasar ad that appeared in the June 1980 issue of Byte magazine the machine had the following features:
4 Mhz CPU
64 K Memory
Two 8" Double Sided, Double Density Floppies
Smart CRT Terminal [There was no terminal with our machine.]
Two serial and Two Parallel ports
Monitor in Prom
Disk Controller - Double Sided Double Density - up to 4 MB
Basic Language Included
Real Time Clock
Upgradable to QDP-8100
The Old-computers.com site reports that this computer was unique in that it offered a startup menu. We will find out once we find a power cord (it got lost somewhere along the way before it came to us) and get this running.
Sometime between June and December of 1980 the company moved from Mitchell Drive in North Olmsted to Brecksville Rd in Brecksville, OH.
In June of 1980 the computer was advertised for $4995.00 and in December of the same year it was advertised at $4695.00. The specs were exactly the same in both ads.
Sorry, no images have yet been entered. As we get more volunteers/interns we will be adding these images.
Documents
Documents for this item have not yet been scanned or not yet posted. There are a lot of pages...contact us if you have an immediate need. (Although there are not a lot of "immediate needs" for a 70+ year old computer!)
One Of A Kind
There should be others out there! At least one article mentions that this company sold these computers to the US Navy. But as of June 2023 we cannot find any other examples of the QDP-100. Please let us know if you come across any!![UPDATE: 12/18/2024] It has been several years but we still haven't seen any record of a QDP-100 computer. However, while it is not the same version, we have found another QDP that belongs to Don...his is a QDP-300. This model seems to have been offered to the public in late 1982.
If you know the location of any other of these items, please let us know by contacting us at Director@TheComputerChurch.com .
OUR DEFINITIONS OF RARITY
One of a Kind: Only known existing item.
Exceedingly Rare: Only 2 to 10 known to exist.
Very Rare: Only 11 to 25 are known to exist.
Rare: Only 26 to 50 are known to exist.
Difficult: Difficult to find.
Available:Can be commonly be purchased.
Unknown: We cannot make a determination.
(For comparison: Many people consider the Apple-1 computer to be rare. As of 2025 there are 92 confirmed and probable Apple-1 computers.)







