NAME  

MMD-1 (Mini-Micro Designer)

MANUFACTURER  

E & L Instruments, Inc.

TYPE  

Educational Computer

ORIGIN  

U.S.A.

YEAR  

1976

BUILT IN LANGUAGE 

ROM Monitor

KEYBOARD  

Hexadecimal 16 keys

CPU  

Intel 8080a or equivalent

SPEED  

2.0 MHz

RAM  

2KB for system and 1KB (upgradable to 4KB) available to user

ROM  

1KB (Monitor)

TEXT MODES 

24 LEDs

I/O PORTS 

Processor bus, Serial I/O

SOUND;

Software controlled two-tone audio 2125 Hz/2975 Hz

PEREPHIREAL

110 baud teleprinter, reader relay control, cassette recorder

POWER SUPPLY 

110/230 VAC Internal PSU

PRICE  

unknown

 

MMD-1

 Both MMD-1 and MMD-2 mini-micro designer boards were the development systems for Intel 8080A CPU built by E&L Instruments Inc. in 1977.

This how E & L introduced their product: "E & L Instruments has introduced the first educational and engineering microcomputer that is simple and versatile enough to be used as a basic training system and yet, has all of the features required for circuit design, interfacing experimentation and software development for the professional designer.

The Mini-Micro Designer is a low cost, expandable system totally supported by the unique Bugbook educational materials. Well adapted for use as classroom texts, or for self-instruction, the Bugbook concept is the ideal introduction to computers for beginners as well as those with considerable technical background and experience."


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