computer science

MYCRO-1

MYCRO-1 is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand MYCRO-1 rather than just read about it. In short: The MYCRO-1 was a microcomputer manufactured and sold by Mycron of Oslo, Norway, in 1974. Built around the Intel 8080 CPU, it was one of the first commercial single-board computer after the Intel SDK-80.

Key takeaways

MYCRO-1 belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect MYCRO-1 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of MYCRO-1 from memory before moving on to harder problems.

Reference excerpt

The MYCRO-1 was a microcomputer manufactured and sold by Mycron of Oslo, Norway, in 1974. Built around the Intel 8080 CPU, it was one of the first commercial single-board computer after the Intel SDK-80. One is currently displayed at the Norwegian Museum of Science and Technology. When introduced, it was sold for approximately $6.000 MYCRO-1 is a microcomputer system based on the microprocessor Intel 8080. Some models have a Zilog Z80 CPU. Since the Z80 is backward compatible with the 8080, this was probably a cost reduction measure. The MYCRO-1 system was designed by MYCRON Data Industri as an entry In the market place for higher powered microcomputer systems. A typical basic configuration of the system:

DIM-1001 CPU DIM-1013 16K-byte dynamic RAM DIM-1090 Chassis with motherboard DIM-1091 Power supply with switch panel

The modules available for the MYCRO-1 system

Computer modules DIM-1001 CPU (8080) DIM-1003 CPU (Z80) DIM-1027 High-speed slave CPU

Memory modules DIM-1010 4K-byte static RAM DIM-1012 4K-byte PROM DIM-1013 16K-byte dynamic RAM DIM-1014 6K-byte EPROM DIM-1015 16K-byte static RAM DIM-1016 64K-byte dynamic RAM

Input/output modules DIM-1019 Dual Serial I/O, Synchronous/Asynchronous DIM-1020 4-channel serial I/O DIM-1021 Two input and two output parallel I/O DIM-1022 Triple serial I/O module DIM-1030 Floppy disc controller DIM-1031 Floppy disc controller DIM-1035 12M-byte disk drive

Process control modules DIM-1023 32-channel digital input module DIM-1025 8-channel pulse counter module DIM-1026 16-channel digital output module DIM-1029 16-channel level detector input module DIM-1042 16-channel analog input modules DIM-1043 8-channel analog output module DIM-1044 16-channel analog diff. amp. input

Data storage DIP 11133 Single floppy disk drive unit DIP 11134 Double floppy disk drive unit

Mycro-1 modules DIM-1090 Chassis with motherboard DIM-1091 Power supply with switch panel

Peripherals DIP-1022 Display DIP-1023 Teletype

Software DIS 1001 PROCOM DIS 1002/1022 MYCRA one-pass assembler DIS 1003 Editor text page editor DIS 1007 Diskette service package DIS 1010/1018 Floating point software packages DIS 1011 Basic interpreter DIS 1012 DDS diskette dataset support DIS 1014 Mycrop diskette based monitor DIS 1015 EPROM programmer routines DIS 1018 Floating point software package DIS 1019 QEdit Text editor DIS 1020 Multi-access disk driver DIS 1021 Mycrop with remote disk access DIS 1024 Fast floating point micro program for DIM 1027 DIS 1024E Communication package for Nord-10 DIS 1027 MyMon. A real-time and time-sharing monitor for Mycro-1 DIS 1029 PL/Mycro resident one-pass compiler DIS 1030 DINIT diskette initialization program DIS 1031 GRTS 115/Mycro-1 emulator DIS 1032 Trace - a software debugging tool DIS 1033 MyReg system for data registration on diskette DIS 1034 Utility routines on the Mycron system diskette DIS 1035 Pas 80 sequential Pascal compiler DIS 1036 DLSM dataset label maintenance

References

External links Picture of a MYCRO-1 with additional floppy controller board A Facebook page to discuss the MYCRO-1 Pictures of a MYCRO-1 Book: PL/MYCRO: a resident PL/M compiler for MYCRO-1 References

Illustrations

Worked examples

Example 1 — a first encounter with MYCRO-1

Start with the simplest possible case. Write down what MYCRO-1 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to MYCRO-1 before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about MYCRO-1 ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of MYCRO-1

In research: MYCRO-1 appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses MYCRO-1 in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: MYCRO-1 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer-related introductions in 1974, Early microcomputers, Mycron computers, so understanding it makes those chapters shorter.
In everyday life: Look for MYCRO-1 outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study MYCRO-1 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what MYCRO-1 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain MYCRO-1 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is MYCRO-1 in simple terms?

Why does MYCRO-1 matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study MYCRO-1?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on MYCRO-1.