Hewlett-Packard First Generation Computer Census  
Written by Accutron on 2006-10-08  

For photographs and historical information, please refer to the article Core Memories: A Photographic History of Early HP Computers.

For technical details on the 2114B computer, please refer to the Hewlett-Packard 2114B exhibit in our electronics museum.

In June 1969, Diebold performed a census of all computers installed in the United States at that time, a mere 62,000 systems. Among those systems, 20,000 were IBM 360, 14,000 were IBM 1401, and exactly 3,834 machines were DEC PDP-8 series. Hewlett-Packard, a relative newcomer to the computer industry, had approximately 400 installed systems and another 100 systems on order, encompassing all models of 2116, 2115 and 2114 available at the time. By 1971, HP released the improved 2100A, instantly obsoleting all previous iterations of their 16-bit processor architecture. Based on the Diebold survey and subsequent termination of the 2116/2115/2114, it is reasonable to estimate that less than 1000 of these first generation HP computers were produced.


2114, 2115 and 2116 computers awaiting shipment at Hewlett-Packard's Cupertino facility, 1969.

As would be expected, very few of these computers have survived the intervening years. This census is an effort to assess the number of first generation HP instrumentation computer CPUs currently held by museums and collectors. The following models are included in the census:

HP 2116A HP 2116B HP 2116C HP 2115A HP 2114A HP 2114B HP 2114C

If you have a first-generation HP computer in your possession, please submit your information via E-mail. Your entries will be added to the census table below. Exact model number, owner name or nickname, and location (city, state, country) are required. Additional information regarding core size and system functionality is also preferred. Functionality ratings are defined as follows:

5/5: Fully functional
4/5: Powers up with minor defects (display or switch problems, other non-critical failures)
3/5: Powers up with moderate defects (logic or memory defects which generate errors)
2/5: Powers up with major defects (failure to cycle or execute logical operations)
1/5: Non-functional (missing CPU cards or core memory, fails to power up, catches on fire)

It has long been suspected that the mythical HP 2114C was never produced, despite the fact that HP published a brochure for it in 1970. In February 2011, we finally confirmed the marginal existence of the 2114C. The Computer History Museum is now in possession of a misidentified prototype 2114C, donated by former HP engineer Harlan Andrews, lead designer of the 2114A and 2114B. Although the 2114C prototype has a 2114B front panel, the model number on the rear placard is '2114C-005, 008'. It also has labels reading '16K Memory' (proving it's not actually a 2114B), and 'Lab proto 2' (suggesting that at least two prototypes were built.) At this time, no production examples of the 2114C have been discovered.


The Census

There are currently 41 computers recorded in this census.

CPU Model Serial # Core Size Functionality Owner Location
2116A 807-00130 8K 5/5 HP Computer Museum (Jon Johnston) Australia
2116A 747-00173 8K 2/5 Tim Riker Salt Lake City, UT USA
2116B Unknown Unknown Unknown Bolo's Computer Museum (Yves Bolognini) Lausanne, Switzerland
2116B Unknown Unknown Unknown Computer History Museum Mountain View, CA USA
2116B Unknown Unknown Unknown Robert Garner CA USA
2116B Unknown Unknown 5/5 Large Scale Systems Museum (Dave McGuire) New Kensington, PA USA
2116B U950-00139 16K 1/5 National Museum of Computing Bletchley, Milton Keynes, UK
2116B Unknown Unknown Unknown Michael Ng Hong Kong
2116B Unknown 16K 4/5 Matt Patoray New Middletown, OH USA
2116B Unknown 16K 3/5 Bob Shannon Leominster, MA USA
2116C Unknown Unknown Unknown Computer History Museum Mountain View, CA USA
2116C Unknown 32K 5/5 Datagate Systems Carson City, NV USA
2116C Unknown 8K 5/5 DVQ (Bob Rosenbloom) Santa Cruz, CA USA
2116C Unknown 8K 5/5 headmark23 (eBay seller) San Jose, CA USA
2116C 1047A00183 8K 4/5 Brent Hilpert Vancouver, BC Canada
2116C Unknown 8K 5/5 HP Computer Museum (Jon Johnston) Australia
2116C Unknown 8K 5/5 HP Computer Museum (Jon Johnston) Australia
2116C 1047A00182 Unknown 4/5 Hans Kulk (restorationist) Netherlands
2116C Unknown Unknown 2/5 William Maddox Unknown
2116C Unknown Unknown 1/5 William Maddox Unknown
2116C 1123U00134 16K 1/5 National Museum of Computing Bletchley, Milton Keynes, UK
2116C Unknown 16K 4/5 Bob Shannon Leominster, MA USA
2116C Unknown 32K 5/5 Shiresoft (Guy Sotomayor) San Jose, CA USA
2115A Unknown Unknown Unknown Computer History Museum Mountain View, CA USA
2115A 744-00118 Unknown Unknown jam68000 (eBay buyer) Unknown
2115A 818-00165 4K Unknown National Museum of Computing Bletchley, Milton Keynes, UK
2115A Unknown Unknown Unknown Dr. Michael Pearson (West Chester University) West Chester, PA USA
2115A Unknown 8K 3/5 Bob Shannon Leominster, MA USA
2114A Unknown Unknown Unknown Dansk Datahistorisk Forening Ballerup, Denmark
2114A 944-00516 Unknown 3/5 Hans Kulk Netherlands
2114A 944-00535 Unknown 1/5 Hans Kulk Netherlands
2114A Unknown Unknown 1/5 Jeff Moffatt? CA USA?
2114A Unknown 8K 5/5 Bob Shannon Leominster, MA USA
2114B Unknown Unknown Unknown Mus?e Bolo (Yves Bolognini) Lausanne, Switzerland
2114B Unknown Unknown Unknown Computer History Museum Mountain View, CA USA
2114B 972-00342 8K 5/5 HP Computer Museum (Jon Johnston) Australia
2114B Unknown 8K 5/5 Jay Jaeger USA
2114B 1105A?00726 4K 4/5 Vintage Technology Association (Micah Mabelitini) Dayton, OH USA
2114B 972-00269 8K 3/5 Jack Rubin Wilmette, IL USA
2114B Unknown 8K 5/5 Bob Shannon Leominster, MA USA
2114C Lab proto 2 16K Unknown Computer History Museum Mountain View, CA USA


HP 2116/15/14 Differential Specifications

*Includes required 2161A power supply.
?Wide Temperature core option available: 0 -50?C, 80%RH @ 50?C.

CPU Model 2116A 2116B 2116C 2115A 2114A 2114B 2114C
Release Date 1966-11 1968-09 1970-10 1967-11 1968-10 1969-11 N/A
Clock Rate (MHz) 10 10 10 8 8 8 8
Memory Cycle Time (usec) 1.6 1.6 1.6 2.0 2.0 2.0 2.0
Default Memory (kw) 4 8 8 4 4 4 4
Maximum Memory in Mainframe (kw) 8 16 32 8 8 8 16
Maximum Memory w/ Extender 16 32 N/A N/A N/A N/A N/A
I/O Channels in Mainframe 16 16 16 8 8 7 6
I/O Channels w/ Extender 48 48 48 24 24 24 23
I/O Channels w/ Multiplexer N/A N/A N/A N/A 56 56 56
Internal Power Supply Yes Yes Yes No Yes Yes Yes
Extended Arithmetic Available Yes Yes Yes Yes No No No
Direct Memory Access Available Yes Yes Yes Yes No Yes Yes
High Speed I/O Available No No No No No Yes Yes
Memory Protect Available Yes Yes Yes No No No No
Mass (kg) 104 104 104 72.6* 43.1 48 46
Vertical Footprint (mm) 801.1 801.1 801.1 577.8* 304.8 304.8 304.8
Base Power Consumption (W) 1000 1000 1000 600 500 500 500
Operational Temperature (?C) 0-55 0-55 0-55 10-40 10-40 10-40? 10-40
Operational Humidity (RH @ ?C) 95% @40 95% @40 95% @40 80% @40 80% @40 80% @40? 80% @40


HP Computer & Calculator Products (1966-1976)

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