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A: Because it can only control 8 bits of data.
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∙ 13y ago
Anonymous
Whys 8051 is called 8 bit micro
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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
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...
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
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.
What is the bit of ear called above the lobe?
its called the pinna
Why 8051 microcontroller called so?
Because it is 8- 8-bit controller (8000 series) 5- It has 5 interrupts 1- It has only one serial communication port
Why 8051 is called 8 bit?
Because its a microcontroller with an 8 bit data bus width.
How do you justify that 8051 is an 8-bit microcontroller?
The 8085 is called an 8 bit microprocessor because the accumulator is 8 bits in size. This means that the primary data size is 8 bits. This is true even though the address bus, certain registers, and certain register operations are 16 bits in size.
What is bit handling instructions in microprocessor and micro controllers?
Microprocessor has only one bit Handling instruction. It can control only one bit. Where has when it comes to Micro-controller it has maximum Bit handling instructions. Example: SETB P1.3 - > Setting Pin3 of port 1
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 8031 8051 and 8751 microcontrollers?
Answer It is both 8 bit processors in a 40 pin package but it is not pin compatible, it have almost the same functions but it is very difficult to compare the two because it is not the same family.
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.
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...
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 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
