This trainer uses popular INTEL 8279 Programmable keyboard / display device. This device has capability to scan 8 X 8 matrix scanned key contact switches as input device. There are many modes of scanning keyboard switches, as described by the device specifications.
Keyboard: This is an input device. In this interface trainer we use 23 scanned keys and a hardware key for external Reset. The user program decides the type of scanning and the method to input the logged data from key sensors.
Display: This is an output device. The device provides scanned display for LED, and other popular display devices. This trainer consists of 6 Nos. of software controlled 7 segment display with necessary buffer drivers. The student has to make an application program to log the input and output devices using necessary I/O protocol sequence as described in the device data sheet. This trainer requires an external +5 V DC@ 200mA power supply. The input output connections to and from this interface module is through a 26 Pin FRC cable.
This interface module requires Microprocessor Trainer Model MPT-85 for control applications.
Specifications:
- Input: 24 low profile feather touch keys
- Output: 6 numbers of software controlled 7-segment display
- Connector: Using 26 Pin FRC ribbon cable.
