MICROPROCESSOR CIRCUITS IN MODULE SYSTEM
The new module system, the dimensions and power supply of which are identical with those of the analogue and digital circuit module systems equipped with the same 4×4 positioning bearing panel, introduces the circuit operation of microprocessors and micro-computers, and their programming techniques along the thematic line of the already known digital module system.
The bus network with optical transmission is integrated into the bearing panel; the light enters, and steps out, respectively, through the bottom panel of the modules. In the case of an expanded system the optical bus network provides appropriate noise immunity even in arbitrary module variations. Its connection cycle number and serviceable life are practically unlimited. The modules containing the logical circuits and memories also have removable cover plates; in this manner the components located in the modules can be inspected.
Within the system 8 + 4 + 4 = 16 optical address bits and 8 separated writing/reading data bits can be found in each module, and in each bearing plate position, respectively, which means 16×(16 + 8 + 8 + 4) = 576 pcs optical couplers. The further 4 control bits in each position carry out the writing/reading designation, as well as the interruption control. The memory capacitance typically may be 4 kilobyte.
Owing to its programming in machine code, the micro-computer has very good memory utilization. When choosing the speed of operation didactic aspects were taken into consideration first of all: the program running clock signal is typically 16 kHz, nevertheless the operation can be slowed down in gradations, and stopped step-by-step without limitation; while the digital logical information can be seen and evaluated at bit level.
The new module system has a keyboard of 4×4 double-functional push-buttons or 8×8 push-button matrix, an LCD screen of 64×128 pixels, an address bus and data bus display, a two-channel audio-player (CD, audio tape) data input facility, IBM-compatible port, inputs and outputs with AD/DA converters, which can be switched in multiplex mode, and also a memory module with program socket suitable for burning in flash memories.
The module combinations can be varied arbitrarily on the bearing surface, the position of the CPU is fixed only.
As a thematic continuation of the approved digital system, the new module system is proposed in every educational institution where the experience-like introduction and familiarisation of the microprocessor controllers and micro-computers in their operation, as well as the basis of their programming are targeted.
DIGITAL AND ANALOG MODULE SYSTEM
FOR EDUCATING ELECTRONIC CIRCUITS
The system consist of compatible modules containing digital and analog basic circuits. The quadrate
modules can be put on/off the bearing panel and rotated with an angle of 90 degrees as well with flick
with the help of polarity proof (positioning by Hall contacts), magnetic, output voltage contacts.
Any bearing panels can be connected for assembling large systems. The educational instrument can be mounted on the wall or the black-board as well.
The operation of the circuit systems can be surveyed like a circuit diagram with the help of the circuit symbols, operating-instruments, displays
on the removable cover plates as well as the uniformly positioned line connections suitable for further amplification.
The connection leads between the modules are substituted in the digital system by lines of light. This unique feature is the precedent of optical
computers applied in the future. The digital system contains one special module as well, which allows to investigate 16 basic circuit variations
reducing the number of the elements. At least 16+30 circuit configurations can be realised using 15 pieces of modules and one special module:
logic circuit configurations,
astable, monostable, bistable circuits,
counter circuits, digital devices,
programmable phase-locked loop,
time multiplex systems,
programming matrixes, memories.
The specifications of the analog system: CMOS-compatible signal levels, synthetic zero point with half supply voltage, +- 4V operation range, operational amplifiers with J-FET input and short-circuit allowance output, connection with magnetic transition bridges and plugs.
At least 40 circuit configurations can be realised using the analog modules:
differential amplification, operational amplifier
realisation of positive and negative feedback and their effects
principle of self-control; oscillation and automatic gain control
non-linear amplification, steepness amplifier circuits
presentation of the Fourier principle, spectrum-analyzator
presentation of the Lissajous method and the beat
modulators (AM 0...200%, FM), wave-form - spectrum relation, demodulation
presentation of filters, selectivity and transfer characteristic by wobbler
practical application of charge coupled analog sampling.
References are available in 26 vocational secondary schools in Hungary.
The exclusive exploiter of the invention is the Hungarian Association for Innovation, project leader: dr. univ. László Antos
|Hungarian Association for Innovation
Registered office and postal address:
Fehérvári St. 108-112.
phone: (+36 1) 430 3330