TK2633. Introduction to Parallel Data Interfacing. DR MASRI AYOB. Introduction. MPU interface to external devices through both parallel and serial interfaces. Parallel data occur in system that use: Displays Keyboard Printers (old printer) Etc. Serial data occurs in: Some printers
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Introduction to Parallel Data Interfacing
DR MASRI AYOB
PC78255A Programmable Peripheral Interface
Figure 1. The pinout of the 8255 (PIA)
Table 1: The function of CS, A0 and A1