Types of Microprocessor 8085 and 8086
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The 8085 microprocessor is an 8-bit microprocessor introduced in 1976 that requires less support circuitry than the Intel 8080, allowing for simpler and cheaper computer systems. The 8086 microprocessor is a 16-bit microprocessor released in 1978 that gave rise to the x86 architecture and was used in early IBM PCs. Key differences are that the 8085 is 8-bit with a 16-bit address bus and 64KB memory while the 8086 is 16-bit with a 20-bit address bus and 1MB memory, and requires more external hardware.
Types of Microprocessor 8085 and 8086
- 1. 8085 microprocessor Vs. 8086 Microprocessor Presenter Md. Rubaiet Ibn Raihan Department of Textile Engineering www.linkedin.com/in/rubaiet-raihan-a1a57a12a
- 2. What is a Microprocessor ? • Multi programmable device • Incorporates with Central Processing Unit (CPU) • A Logic Chip • Instructed by Basic Input – Output System (BIOS) • Operates on numbers and symbols • Represented by numeral binary system Note: It is general purpose device
- 3. What is Bit ? • Microprocessor run by bit • Unit of Information • Microprocessor run by bit • Used for computing and digital communications • Values are 0 and 1
- 4. 8085 Microprocessor The Intel 8085 ("eighty-eighty-five") is an 8-bit microprocessor produced by Intel and introduced in 1976. It is a software-binary compatible with the more-famous Intel 8080 with only two minor instructions added to support its added interrupt and serial input/output features. However, it requires less support circuitry, allowing simpler and less expensive microcomputer systems to be built.
- 5. 8086 Microprocessor The 8086 ("eighty eighty-six", also called iAPX 86) is a 16 bit microprocessor chip designed by Intel between early 1976 and mid-1978, when it was released. The Intel 8088, released in 1979, is a slightly modified chip with an external 8-bit data bus (allowing the use of cheaper and fewer supporting ICs), and is notable as the processor used in the original IBM PC design, including the widespread version called IBM PC XT. The 8086 gave rise to the x86 architecture, which eventually became Intel's most successful line of processors.
- 6. Comparison 8085 vs 8086 Parameter 8085 microprocessor 8086 microprocessor Size 8 Bit Microprocessor 16 Bit Microprocessor Address Bus 16 Bit Address Bus 20 Bit Address Bus Memory 64 KB 1 MB Instruction Queue No Instruction Queue Useable Instruction Queue Pipe lining Does not Support Support Multiprocessing Support Does not Support Support Input – Output 256 I/O 65536 I/O Arithmetic Supports integer and decimal only Supports integer, decimal and ASCII arithmetic Operating Modes Single O/M Dual O/M External Hardware Less external hardware More external hardware Cost Low High Memory Segmentation Memory space is not segmented Memory space is segmented