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80186 Pin Diagram

80186 Pin Diagram: The 80186 is a 68-pin IC and it is available in Plastic Leaded Chip Carrier (PLCC), ceramic Leadless Chip Carrier (LCC) and Pin Grid Array (PGA) packages.…

Types of LCD Displays

Types of LCD Displays: The Types of LCD Displays are one of the most fascinating material systems in nature, having properties of liquids as well as of a solid crystal.…

8279 Block Diagram

8279 Block Diagram: Fig. 14.84 shows the 8279 Block Diagram. It consists of four main sections CPU interface and control section Scan section 8279 Keyboard section Display section 1.CPU Interface…

8257 Pin Diagram

8257 Pin Diagram: Fig. 14.61 shows 8257 Pin Diagram. Data Bus (D0-D7) : These are bi-directional tri-state signals connected to the system data bus. When CPU is having control of…

8255 Interfacing with 8086

8255 Interfacing with 8086: Fig. 14.17 shows the 8255 Interfacing with 8086 Microprocessor and Interfacing 8255 with 8085 Microprocessor in I/O mapped I/O technique. Here RD and WR signals are…

8051 Addressing Modes: The 8051 Addressing Modes architecture supports several distinct physical address spaces. On - chip program memory On - chip data memory External program memory External data memory…

Intel 8051 Architecture and 8031 Architecture

Intel 8051 Architecture and 8031 Architecture: Fig. 12.2 shows the Intel 8051 Architecture and 8031 Architecture. It consists of a Central Processing Unit, two kinds of memory (data RAM plus…

Features of 8051 Microcontroller

Features of 8051 Microcontroller: The Features of 8051 Microcontroller family are as follows. 1. Single-supply +5 volt operation using HMOS technology. 2. 4096 bytes program memory on-chip (not on 8031).…