0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why 8051 is called 8 bit micro controller?
A: Because it can only control 8 bits of data.
What does The device supports throughput of 16 MIPS at 16 MHz mean?
8051 - 8 bit micro based on CISC architecture ( Complex Instruction Set Computer) PIC - 8 bit micro based on RISC architecture ( Reduced Instruction Set Computer)AVR - 8 bit micro based on RISC architecture ( Reduced Instruction Set Computer)there are also 16bit and 32 bit micros from the same familyinvention wise, 8051 is the forefather ( date of birth = 1985), next cam PIC s and then came the AVRs.its essential to learn 8051 to be able to learn other micros. if we come to instruction set of these micros :8051 has 250 instructions which take 1 to 4 machine cycles to executivePIC has nearly 40 instructions which are mostly 4 cycles instructionsAVRs have 140 instructions whcih are mostly 1 cycle basedif we come to speed factor:1 machine cycle in 8051 (normal) divides the clock freq. by 12 ( some derivatives divide by 6 and by 1 also)1 machine cycle in PIC divides the clock freq by 41 M.C in AVRs divides the clock freq by 1for eg: if we use 12 Mhz Xtal in all the 3 micros then the speed of execution will be as follows:8051 = 12Mhz /12 = 1 Mhz i,e = 1 million instructions per secondPIC = 12Mhz/4 = 3 Mhz i,e = 3 million instructions per secondAVR = 12Mhz/1 = 12 MHz i,e = 12 Million instructions per second
8051 pin diagram pin description?
The Intel 8051 is an 8-bit microcontroller which means that most available operations are limited to 8 bits. There are 3 basic "sizes" of the 8051: Short, Standard, and Extended. The Short and Standard chips are often available in DIP form, but the Extended 8051 models often have a different form factor, and are not "drop-in compatable". All these things are called 8051 because they can all be programmed using 8051 assembly language, and they all share certain features (although the different models all have their own special features). Some of the features that have made the 8051 popular are: * 8-bit data bus * 16-bit address bus * 32 general purpose registers each of 8 bits * 16 bit timers (usually 2, but may have more, or less). * 3 internal and 2 external interrupts. * Bit as well as byte addressable RAM area of 16 bytes. * Four 8-bit ports, (short models have two 8-bit ports). * 16-bit program counter and data pointer 8051 models may also have a number of special, model-specific features, such as UARTs, ADC, OpAmps, etc...
Circuit diagram of IR TV remote control using 8051 microcontroller also explain its working?
the 8051 is a micro controller the buttons tell the 8051 to do something there is an ir led on an output bit of the 8051 that shines on the tv ir detector it pulses a code the tv knows or window fan, ac , vcr, dvd the other output bits are used to scan multiple buttons like the difference between a rotary and touch tone Phone ive seen them with tms1000 and z8 thermostats may have 68hc11 it has 8 channel a/d right on it circuit diagram is very trivial its all in how you pulse the led
Difference between 8051 and 8751 micro controllers?
There are many differences between the 8085 and the 8086/8088. Naming just a few...8085 is an 8 bit processor, while 8086 is a 16 bit processor8085 has a 16 bit address bus, while 8086 has a 20 bit address bus 8085 has an 8 bit data bus8088 has an 8 bit data bus8086 has a 16 bit data bus8086 has a segmented architecture to support the 20 bit address bus8086 has additional registers that support string and repeated loop instructions8086 has addition register that support stack frame parameter addressing8086 has more addressing modes, including cross-segment modes8086 has more types of interrupts, including debug single-step8086 has true multiplication and division instructionsIf anyone has any more examples, please fee free to add to the list.
How many total instructions are there in 8085 MP?
there are 74 instruction sets in the 8085 up which consist of 246 bit pattern.
Why 8051 is called 8 bit micro controller?
A: Because it can only control 8 bits of data.
What is the 16 bit register in the 8051?
pc and stack pointer
What is the external data memory capacity of 8051 and why?
65536 bytes, because the 8051 family has a 16 bit external address buss.
Why 8051 is called 8 bit?
Because its a microcontroller with an 8 bit data bus width.
Bit addressable registers in 8051?
just a note: Clarify your question Bit-addressable registers are registers that its bits can be modified individually. that means if you have register named "ACC" that is bit addressable , you can change its bits (D0 -D7) individually by special instructions SETB and CLR. ex: SETB ACC.3 ; will set bit number 4 (remember bit 0) in the register in 8051 there are many bit-addressable registers such as A (ACC), B, SCON, PCON, TCON, p0,p1,p2,p3 . best wishes, drdigital.
How do you add and subtract 16 bit numbers using 8051 microprocessor?
The 8051 is a microcontroller, not a microprocessor. To add or subtract, use the ADD or SUBB opcodes.
What is data manipulation instruction?
Uses the ALU in the CPU to carry out these instructions. One of the operand must be kept in theaccumulator or reg. A for 8-bit operations. For 16-bit operations the operand is kept in a registerpair HL. or we can say data manipulation instructionvirtual all data operations use:accumulator for byte operationsor carry bit for bit operationslogical operations: AND OR XOR NOT called compelementbit operation:carry bit,many bit in register.
What are they 7 groups of instructions in a Pentium instruction set?
Date transfer Arithmetic and logic bit manipulation loops and jumps strings subroutines and interrupts control
What is the advantage of bit-addressability for 8051 ports?
a powerful feature of 8051 I/O ports is their capability to access individual bits of the port without altering the rest of the bits in that port. of the four 8051 ports we can access either the entire 8 bits or any single bit without altering the rest
What is the advantage of bit addressability for 8051 ports?
a powerful feature of 8051 I/O ports is their capability to access individual bits of the port without altering the rest of the bits in that port. of the four 8051 ports we can access either the entire 8 bits or any single bit without altering the rest
What does The device supports throughput of 16 MIPS at 16 MHz mean?
8051 - 8 bit micro based on CISC architecture ( Complex Instruction Set Computer) PIC - 8 bit micro based on RISC architecture ( Reduced Instruction Set Computer)AVR - 8 bit micro based on RISC architecture ( Reduced Instruction Set Computer)there are also 16bit and 32 bit micros from the same familyinvention wise, 8051 is the forefather ( date of birth = 1985), next cam PIC s and then came the AVRs.its essential to learn 8051 to be able to learn other micros. if we come to instruction set of these micros :8051 has 250 instructions which take 1 to 4 machine cycles to executivePIC has nearly 40 instructions which are mostly 4 cycles instructionsAVRs have 140 instructions whcih are mostly 1 cycle basedif we come to speed factor:1 machine cycle in 8051 (normal) divides the clock freq. by 12 ( some derivatives divide by 6 and by 1 also)1 machine cycle in PIC divides the clock freq by 41 M.C in AVRs divides the clock freq by 1for eg: if we use 12 Mhz Xtal in all the 3 micros then the speed of execution will be as follows:8051 = 12Mhz /12 = 1 Mhz i,e = 1 million instructions per secondPIC = 12Mhz/4 = 3 Mhz i,e = 3 million instructions per secondAVR = 12Mhz/1 = 12 MHz i,e = 12 Million instructions per second
