Introduction: Microprocessor also called CPU (central processing unit) or logic chip is the core of a computer. It is the main computational device which do all arithmatic, logical and control calculations. These tasks are performed by using digital logic design steps on microprocessors. In 1971 first intel microprocessor was developed which made the architecture of computers a lot more simple. Instruction set, bandwidth and clock speed are the parameters to differentiate different processors. Architecture: The main things in the architecture of Intel 8085 microprocessor are memory, interrupts, I/O ports, registers, instruction sets and addressing modes. The total memory used in intel 8085 microprocessor for addressing is 64 KB. Jump and data in microprocessor are controlled by 16 bit addresses. Size of memory control the limit of stack memory. There are mainly five types of interrupts e.g INTR, RST 5.5, RST 6.5, RST 7.5 and Trap. They perform different actions or call different instructions when they are occur ed. They can be enabled or disabled using different instruction sets. Coming back to the architecture of Intel 8085 microprocessor there are 256 input and output ports used for different actions. Eight bit registers are used to perform different operations. Then there are different instructions or commands which are used to perform different actions. Also different kind of addressing modes are used.
Applications: The applications of microprocessors varies from the field of communication and medical to the field of instrumentation. Some applications include credit card processing, ECG, DVD player, telephone exchanges, telephone sets, satellite communication, mobile phone and modems. References: www.computer.howstuffworks.com/microprocessor.htm www.webopedia.com/TERM/M/microprocessor.html www.teachurselfece.com www.zseries.in/embedded%lab/8085%microprocessor/other%applications
0 Comments
|