KEYBOARD AND DISPLAY MODULE :					ADC & DAC INTERFACE:
Parallel Port Based  16 Keys in 4 x 4 matrix.  4 Digit 7 Segment display.  Can be hooked up to any parallel port (Dio-1 standard) Termination : Dio-1 bus at 26 pin IDC Connector.  26 Core Cable Keyboard Design. Interfacing Keyboard.					Parallel Port Based  Two numbers of DAC 0800 - Digital to Analog Convertor, Analog Output: +5V to -5V, DAC can be used as ADC using successive approximation technique by software. DAC and ADC Outputs/Inputs are connector terminated at suitable  Detailed Hardware & Software manual. 26 Core Cable Input : 230V A.C. Output : +5V / 3.5 A , ±12V / 150 mA.

CONSTANT VOLTAGE & CURRENT SOURCE CARD					8/16 CHANNEL ADC INTERFACE BOARD:
Parallel Port based One 12 bit DAC and Op-Amp circuitry to give constant voltage output of 0-12 volt @ 0.2 Amp. One 12 bit DAC and Op-Amp circuitry to give constant current output of					Parallel Port Based,  Incorporates two nos of ADC0809, All the 8 channel Analog inputs are terminated at suitable connectors,  Trimpot is provided onboard for connecting to channel 0 or 3 or 6, selectable Jumpers 26 Core Cable

8253 DEMONSTRATION BOARD: [VLIM-004]					NUMERIC PRINTER INTERFACE WITH PRINTER: [VLIM-005]
Provision to give External/ Internal/Manual input clock to 8253 available in the trainer  Baud rate generation and other applications using 8253  SPDT switch and jumpers are provided to control the gate and clock inputs of 8253 26 Core Cable					Serial Port Based  18 column numeric printer  Required External Power Supply Suitable cable, Software to print number and symbols provided

STEPPER MOTOR CONTROLLER WITH MOTOR: [VLIM-013A]					REAL TIME CLOCK / CALENDER BOARD: [VLIM-015]
Parallel Port Based  Driver for controlling a stepper motor, Can control Stepper motors ranging from 2Kg to 20Kg  One 2Kg/6 Volt Stepper motor Module  Provision for connecting Internal or external power supply of 6V, 12V or 24V, selectable by jumpers					Parallel Port Based  Based on MSM 6242 Real Time Clock/Calender Chip  Date/Time programmable by Microprocessor 3.6V rechargeable Ni-CD battery backup  Seconds adjust provided on board by shunt  26 core cable

4 DIGIT DISPLAY CARD: [VLIM-016]					ELEVATOR SIMULATOR INTERFACE:[VLIM-022]
Parallel Port Based  4 Digit Seven Segment Displays Independent ports for digit selection and issuing digit data. Fully software controlled multiplexed display					Parallel Port Based  4 floors are assumed  Separate request and status buttons for each floor  Lift is represented by a column of 8 LED's  Movement of Lift is controlled by software  26 Core Cable

MATRIX DISPLAY: [VLIM-023]					Switches and LED module [VLIM-024]
Parallel Port Based  To display 2 character of Alphanumeric LEDs in Matrix 5 x7. 26 Core Cable					8 Nos. of SPDT Switches provided through buffers 8 Nos. of LEDs provided and Drivers are provided to drive the 8 LEDs All the inputs / outputs are terminated at 26 Pin FRC connector. (Compatible with 8255 port) 26 Core Cable

TRAFFIC LIGHT CONTROL SYSTEM: [TRAF]					HEXA DECIMAL KEYBOARD: [HKEY]
Connected to parallel port (Dio-1 bus) of all the kits 32 LEDs provided to Simulate Traffic Control System Buffers provided for individual LEDs  26 Core Cable					Parallel Port Based 16 keys in 4 x 4 matrix Can be hooked up to any parallel port (Dio-1 standard) Termination: Dio-1 bus at 26 Pin IDC Connector 26 Core Cable

LOGIC CONTROLLER BOARD:[PLC]					TONE GENERATOR AND AUDIO CASSETTE INTERFACE: [TGEN]
Parallel Port (Dio-1 bus) Based 12 TTL Buffered outputs 12 LEDS at all the outputs 12 TTL Buffered inputs 12 LEDs at all the inputs Software to control various logic combinations  26 Core Cable					Can be connected to the 8255 I/O port. Tones of various frequency ranges can be generated by programming the 8255 output. Miniature speaker provided onboard Provision for connecting Timer output to generate continuous musical tones. Interface circuitry provided to write or read data to or from an Audio Cassette. Two connectors (EP-socket) are provided for connecting EAR and MIC of tape recorder. 26 Core Cable

DAC STAND ALONE STUDY MODULE: [VSTM-02A]					ADC 8 CHANNEL STANDALONE MODULE :[VSTM-03]
8 bit D/A converter. 8 SPDT switches provided Digital input can be given manually through 8 SPDT switches or automatic mode. 8 LED's monitoring the status of data to DAC 0800. One trimpot is provided to vary the amplitude of the generated waveform by varying the reference level of the DAC. 100 conversion per second. Timer provided for generating clock pulse to the Ripple counter.					8 Channel 8 bit ADC. 8 bit A/D conversion based on ADC 0809 Start of Conversion by Manual switch All 8 Channel analog inputs are available at screw type connector A potentiometer is provided for demonstration Analog Input A switch is provided for ALE LED provision for SOC indication Digital data is displayed using the LED's. Status of end of conversion signal is monitored using LED's. Test points are provided for SOC, EOC & ALE signals.

RAM STUDY CARD : [VSTM-024R]					EPROM STUDY CARD :[VSTM-024E]
A highly reliable machine, gold plated, socket provided to insert RAM under study. Provision to study the Read / Write waveform. timing diagram of popular RAM like 6264, 62256 etc. Read & Write operation can be selected by jumper 12 bit counter for address generation. 12 LED's are provided to indicate the address of the RAM. 8 Bit data can be written in to the RAM through a buffer. Data selection by jumper pins. 8 LEDs provided to indicate the Data In or Data Out of RAM. Circuit provision for WRITE PROTECTING the RAM. 5V Power Supply					A highly reliable machine gold plated socket provided to insert EPROM under study. Provision to study the Read waveform. timing diagram of popular EPROM like 2764, 27256 etc. 12 bit counter for address generation. 12 LEDs are provided to indicate the address of the EPROM. 8 LEDs provided to indicate the "Data Out" of EPROM. 5 V power supply