Pc Structure
COMPUTER STRUCTURE AND LOGIC
ASSIGNMENT 1 - THE HISTORY OF MICROPROCESSOR
STUDENT NAME - MALLAWATHANTHRIGE RASIKA PERERA
STUDENT ID - 15440329 YEAR | MODEL # | DISTINGUISHING FEATURE | NUMBER OF BITS\MEMORY | 1971 | INTEL 4004 | * 4KB Main Memory * 45 Instructions * Was 1st programmable device which was used in calculators * PMOS Technology | 4 bit | 1972 | INTEL 8008 | * 16KB Main Memory * 48 Instructions * PMOS Technology * slow | 8 bit | 1973 | INTEL 8008 | * 64KB Main Memory * 2 microseconds clock cycle time * 500,000 instructions/sec * 10x faster than 8008 * NMOS Technology * Drawback was that it needed 3 power supplies * Small computers were design using 8080 as CPU | 8 bit | 1975 | INTEL 8085 | * 64 KB Main Memory * 1.3 microseconds clock cycle time * 246 Instructions | 8bit | 1978 | INTEL 8086/8088 | * 1KB Main Memory * Data Bus width of 8086 is 16 bit and 8 bit for 8088 * 1 MB Main Memory * 400 nanoseconds clock cycle time * 6 byte instruction cache for 8086 and 4 byte for 8088 * In 1981 IBM decided to use 8088 in its personal computer | 16 bit | 1982 | INTEL 80186 | * 1MB Main Memory * Contained special hardware like programmable counters, interrupt controller etc.. * Never used in the PC * Ideal for systems that required a minimum of hardware | 16 bit | 1983 | INTEL 80286 | * 16 MB Main Memory * Instruction execution time is as little as 250 ns * Concentrate on the features needed to implement MULTITASKING | 16 bit high performance microprocessor with memory management and protection | 1986 | INTEL 80386 | * 4 GB Main Memory * Improvements include page handling in virtual environment * Include hardware circuitry for memory management and memory assignment * Memory paging and enhanced I/O permissions | 32 bit | 1989 | | * 4GB Main Memory * 8K byte cache on one package * About half of the instructions
ASSIGNMENT 1 - THE HISTORY OF MICROPROCESSOR
STUDENT NAME - MALLAWATHANTHRIGE RASIKA PERERA
STUDENT ID - 15440329 YEAR | MODEL # | DISTINGUISHING FEATURE | NUMBER OF BITS\MEMORY | 1971 | INTEL 4004 | * 4KB Main Memory * 45 Instructions * Was 1st programmable device which was used in calculators * PMOS Technology | 4 bit | 1972 | INTEL 8008 | * 16KB Main Memory * 48 Instructions * PMOS Technology * slow | 8 bit | 1973 | INTEL 8008 | * 64KB Main Memory * 2 microseconds clock cycle time * 500,000 instructions/sec * 10x faster than 8008 * NMOS Technology * Drawback was that it needed 3 power supplies * Small computers were design using 8080 as CPU | 8 bit | 1975 | INTEL 8085 | * 64 KB Main Memory * 1.3 microseconds clock cycle time * 246 Instructions | 8bit | 1978 | INTEL 8086/8088 | * 1KB Main Memory * Data Bus width of 8086 is 16 bit and 8 bit for 8088 * 1 MB Main Memory * 400 nanoseconds clock cycle time * 6 byte instruction cache for 8086 and 4 byte for 8088 * In 1981 IBM decided to use 8088 in its personal computer | 16 bit | 1982 | INTEL 80186 | * 1MB Main Memory * Contained special hardware like programmable counters, interrupt controller etc.. * Never used in the PC * Ideal for systems that required a minimum of hardware | 16 bit | 1983 | INTEL 80286 | * 16 MB Main Memory * Instruction execution time is as little as 250 ns * Concentrate on the features needed to implement MULTITASKING | 16 bit high performance microprocessor with memory management and protection | 1986 | INTEL 80386 | * 4 GB Main Memory * Improvements include page handling in virtual environment * Include hardware circuitry for memory management and memory assignment * Memory paging and enhanced I/O permissions | 32 bit | 1989 | | * 4GB Main Memory * 8K byte cache on one package * About half of the instructions