Microprocessors and Microcontrollers BE (EE/EEE) 5th sem


Comments

Post a Comment

Popular posts from this blog

Architecture of 8086

Image
A   Microprocessor   is an Integrated Circuit with all the functions of a CPU. However, it cannot be used stand-alone since unlike a microcontroller it   has no memory or peripherals .  8086 does not have RAM or ROM inside it. However, it has  internal registers  for storing intermediate and final results and interfaces with memory located outside it through the System Bus.  In the case of 8086, it is a 16-bit  Integer processor  in a 40-pin, Dual Inline Packaged IC.  The size of the internal registers(present within the chip) indicates how much information the processor can operate on at a time ( in this case 16-bit registers ) and how it moves data around internally within the chip, sometimes also referred to as the internal data bus.  8086 provides the programmer with 14 internal registers, each of 16 bits or 2 bytes wide.  The main advantage of the 8086 microprocessor is that it supports Pipelining. 8086 Architecture M...
Read more

Assignment Questions (Subject:- Microprocessor and Microcontroller)

  Microprocessor and Microcontroller Assignment Questions Instructions: ·          Solve any 8 questions in each section. ·          Make appropriate assumptions wherever necessary. Unit 1 1.       What is microprocessor? 2.       What is the difference between the microprocessor and microcontroller? 3.       Explain the register organization of 8086 4.       How many data lines and address lines are available in 8086? 5.       Explain briefly about the internal hardware architecture of 8086 microprocessor with a neat diagram 6.       What is the maximum memory size that can be addressed by 8086? 7.       Calculate the physical address for fetching the next instruction to be executed, in 8086? 8.  ...
Read more

Programmable Serial Communication Interface 8251 USART

Image
Programmable Serial Communication Interface 8251 USART 8251 universal synchronous asynchronous receiver transmitter (USART) acts as a mediator between the microprocessor and peripheral to transmit serial data into parallel form and vice versa. It takes data serially from peripheral (outside devices) and converts it into parallel data. After converting the data into parallel form, it transmits it to the CPU. Similarly, it receives parallel data from the microprocessor and converts it into serial form. After converting data into a serial form, it transmits it to the outside device (peripheral). The pin description of the 8251A chip Pin Description D 0   - D 7 parallel data C/D Control register or Data buffer select RD Read Control WR Write control CS Chip Select CLK clock pulse RESET Reset TxC ...
Read more