1980年，计算机产品稳定发展。当年的主要计算机品牌有：
| Description | |
| Manufacturer | Hewlett Packard |
| Model | Model 85 |
| Date Announced | 1979 |
| Date Canceled | 1984 |
| Number Produced | Unknown |
| Country of Origin | USA |
| Price | $3,200+ |
| Current Value | $25-$200 |
| Specifications | |
| Processor | HP Custom 8-bit |
| Speed | Unknown |
| RAM | 8K-64K |
| ROM | Up to 32K |
| Storage | Built-in DC100 Tape Drive, optional external 5.25" disk drives |
| Expansion | Expansion cartridge slots added various functionality, interface or storage. |
| Bus | HP Proprietary |
| Video | 256x192 built-in B/W monitor |
| I/O | Optionally: Parallel, Serial, HP-IB |
| OS Options | N/A |
| Notes | The HP 85 is often categorized as a calculator rather then a computer but with built-in BASIC, mass storage and a reasonable amount of RAM, it is a full-fledged computer. |
| Related Items in Collection | Manuals, tons of tapes, custom carrying case (plywood) |
| Related Items Wanted | A new capstain or some way of repairing mine. |
The HP-85 was a logical extension of the HP Calculator line that added a bigger screen and more storage to stronger calculating ability.
By including BASIC with the machine they also added programmability. With the addition of "option drawers" the machine was as expandable as any other on the market.
| Introduced: | December, 1979 |
| Released: | January, 1980 |
| Price: | US$3,250 |
| Weight: | 20 lbs |
| CPU: | custom HP 8bit @ 0.613MHz |
| RAM: | 8K, 64K max. |
| Display: | built-in 5 inch monitor |
| 32 x 16 text | |
| 256 X 192 graphics | |
| built-in 32 char. thermal printer | |
| Storage | built-in DC100 217K tape drive |
| Ports: | four expansion ports |
| OS: | HP BASIC in ROM |
详解
Similar in appearance to the IBM 5100 from five years earlier in 1975, the Hewlett-Packard HP-85 is an all-in-one portable computer system with a built-in keyboard, 5" screen, thermal printer, tape storage unit, and the BASIC programming language.
With its top off, it can be seen that the HP-85 has a clean and simple layout.
On the left is the monitor and display circuitry, on the right is the thermal printer and tape storage mechanism.
The main motherboard is beneath the keyboard, shown here folded up. Except for the eight memory chips, all of the chips are custom HP designed.
There are four ports on the back for expansion carts.
Released in 1982, the low-profile HP-86 personal computer offered users more options and expandability than the HP-85, which had been introduced two years earlier. It has no internal display, printer, or data storage - all of these are now external peripherals. The HP-86 came standard with 48K of RAM.  |
 |
In 1982, Hewlett-Packard released the HP-87 computer, as seen here to the right.
参考文献回目录
http://www.vintage-computer.com/hp85.shtml
http://en.wikipedia.org/wiki/HP_series_80
http://oldcomputers.net/hp85.html
http://oldcomputers.net/hp85.html
