Microprocessors and microcontrollers are fundamental components in modern digital electronics, playing crucial roles in various electronic systems, from simple embedded devices to complex computing systems
Microprocessors are an essential component of modern-day computing devices. The
8085 microprocessor is one such type of microprocessor that was widely used in the
1980s. This post provides a brief introduction to the fundamentals of the 8085
microprocessor and its associated topics.
Fundamentals of 8085 Microprocessor
The 8085 microprocessor is an 8-bit microprocessor developed by Intel in the mid-
1970s. It is a single chip microprocessor that has a CPU, clock generator, and I/O
control logic.
Architecture of 8085 Microprocessor
The 8085 microprocessor has some key features in its architecture, such as
accumulator, flags, registers, and interrupts. The accumulator is used for
arithmetic and logical operations. Flags are used to indicate the result of an
instruction. Registers are used to store data temporarily. Interrupts are used to
handle external devices.
Instructions of 8085 Microprocessor
The 8085 microprocessor has a wide range of instructions for data transfer,
arithmetic, logical, and stack and branch operations. These instructions help to
perform various tasks like moving data, performing arithmetic and logical
operations, and managing stack and branching instructions.
Data Transfer Instructions
Data transfer instructions are used to transfer data from one memory location or
register to another. The data transfer instructions in the 8085 microprocessor
include MOV, LDA, STA, LHLD, SHLD, LXI, and XCHG.
Arithmetic Instructions
Arithmetic instructions are used to perform arithmetic operations such as addition,
subtraction, and increment or decrement. The arithmetic instructions in the 8085
microprocessor include ADD, ADC, SUB, SBB, INC, and DEC.
Logical Instructions
Logical instructions are used to perform logical operations such as AND, OR, EXOR,
and complement. The logical instructions in the 8085 microprocessor include ANA,
ORA, XRA, and CMA.
Stack and Branch Instructions
The stack and branch instructions in the 8085 microprocessor are used to transfer
data to and from the stack and to perform conditional branching. These instructions
include PUSH, POP, CALL, RET, JMP, JC, JNC, JZ, and JNZ.
Support Chips for 8085 Microprocessor
Support chips are used with the 8085 microprocessor to provide additional
functionality. These chips include the 8255 Programmable Peripheral Interface, 8251
USART, 8253 Timer, and 8257 DMA Controller.
Target Audience and Prerequisite Knowledge
The Introduction to Microprocessors course is designed for students who have basic
knowledge of computer organization, architecture, and programming. This course is
ideal for students interested in pursuing a career in computer engineering,
electronics engineering, or computer science.
In summary, the Introduction to Microprocessors course covers the fundamentals of
the 8085 microprocessor, its architecture, instructions, and support chips. It is a
course designed to provide students with a strong foundation in microprocessors and
programming concepts. The target audience is students who have prior knowledge of
computer organization, architecture, and programming. With the knowledge gained in
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller janarthananjanarthanan. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.49. You're not tied to anything after your purchase.
