Do subscribe to Ekeeda Channel and press bell icon to get updates about latest Engineering HSC and IIT-JEE Mains and Advanced videos. Hello Friends, In this video we will study the comparison between the 8085 and 8086 Microprocessors so let us start with the topic. As 8086 Microprocessor it is an enhanced version of 8085 so it will have some special features which were not available in 8085 so we can say that 8086 it is a better version of 8085 so let us see the various comparison so we can say that the various features of 8 0 8 5 and 8 0 8 6 which are different from each of them so force difference between 85 and 886 is the size of the microprocessor the micro processors they can be either 8-bit microprocessor 16-bit or 32-bit or 64-bit so these are bits they describe the size of the microprocessor or the size of the data these microprocessor can handle so the first difference between 80 85 and 88 e6 is based on the size of the microprocessor the 885 microprocessor it is an 8-bit microprocessor whereas the 886 it is a 16-bit microprocessor means that 85 it can handle a data of 8-bit whereas 8086 it handles or it deals with the data which is of 16-bit ok so here we can write that 885 is 8-bit microprocessor whereas 8086 is 16-bit micro processor so that is the first difference between these two next is that if the size is difference so the size of the address bus and the data bus will also be different so second we have to address and data bus the address and the data buses they depend upon the size of the data which the micro processors can handle so here are the microprocessor the it is of 8-bit okay so the address bus of the 80-85 it is of 16 bits and data buses of 8-bit so 80-85 has 16 bit address bus and 8 bit data bus so that data sizes was 8 bit so data bus is also 8 bit whereas in 8 0 8 6 it has 20-bit address bus and 16-bit data bus so it is a 16-bit microprocessor so the data bus is also 16-bit ok so that is the difference between the address and the data was of 80 85 and 86 micro processors third we have memory so the memory is also somewhat related with the size and the buses okay so here the memory size of 1885 it is 64 kilobytes whereas the memory size of 8086 it is one megabyte so 885 which can access up to 64 kilobytes whereas 8086 it can access up to 1 megabyte next we have instruction in 885 there is no arithmetic illogical instruction which opry performs the operations like multiplication and division whereas multiplication and division can be performed in 8 0 8 6 microprocessor also when the instruction are executed in a 0 8 5 only one instruction is faced then decode and then executed whereas in 1886 6 instructions are fetched at a time so that the speed of processing is faster ok so here we can say that 8 0 8 5 does not perform multiplication and division 8086 it can perform multiplication and division operations also the 885 it does not have an instruction queue facility whereas 886 it has an instruction queue okay so it prefetches six instructions at a time so that is the difference between the 80 85 and 86 microprocessor next we have pipelining the pipelining it is a type of facility which is available in 1886 only 1885 does not have the pipelining feature pipelining feature means that it has two stages in which the instructions are executed first is the fetch estate at the execute stage in the pet estate the instructions are fetched and in execute stage these instructions will be executed by the microprocessor so it has two stages of pipelining 8086 whereas 80-85 it has first fetch then decode and then execute so 80-85 it does not support the pipeline architecture whereas EDD six supports a pipeline structure next comparison is of the input/output devices so input/output devices because this is a 8 0 8 5 microprocessor it has an 8 bit data bus so it can address up to 2 raised to the power 8 that means 256 input/output devices whereas the data bus of the 886 it is of 16 bits so it can address 2 raised to the power 16 input/output devices so here we can write that 885 it can address 2 raised to the power 8 that is 256 input/output devices whereas 886 can address 2 raised to the power 16 that is 6 5 5 3 6 input/output devices so that is the difference that how many number of input output input/output devices can be addressed by the micro processors next differences of cost now as the cost the circuitry is increased so 8 0 8 5 will have the lower cost it will be cheaper than the 8 0 8 6 another differences of speed of processing the processing speed of 8 0 8 6 is fast because it has the instruction pipelining structure so in the instruction pipelining 6 instructions are at a time of fetched whereas in 8 0 8 5 only one instruction is faced at a time so 8 0 8 6 has faster processing speed then a zero eight five now another difference between the eight zero eight five and eight zero eight six is based on the size of the registers though 0 8 5 microprocessor because it is an 8-bit microprocessor it is handling 8-bit data so the size of the register is also 8 bit whereas 8 0 8 6 it is a 16-bit microprocessor it can handle 16-bit data so there are distance out of 16 bit so here we can write that 8 0 8 5 has 8-bit registers generally like Lu it is off 8 bit okay whereas 8 0 8 6 it has 16-bit registers okay next the last difference between though 8 0 8 5 & 8 0 8 6 it is on the number of flags and interrupts there are five flags in the 8 0 8 5 like sign flag zero flag parity flag auxilary carry and carry flags these flags are used to show the conditions of the registers when the arithmetic and logical operations are performed so the number of flags in 8 0 8 5 is 5 whereas the number of flags in 8086 it is 8 it has 3 control flags also the five flags in 8 0 8 5 other conditional flags whereas in 8 0 8 6 it has the 5 conditional flags plus 3 control flags also now on the number of interrupts in 885 it has limited interrupts like it has RS t 0 2 RS t 7 int R then graph rst seven point five six point five five point five so approximately the number of interrupts will be 15 to 20 whereas in 8086 it has 256 vectored in drops so the number of interrupts has also increased in 8086 now coming to the similarity these were the differences now if we talk about the similarities then the both the 80 85 86 they are 40 penh isis both operate at plus 5 full power supply and ET t 6 can also performed all the earth Matic and logical operations ok so these were some of the similarities and then we studied the 10 differences between this here we have the difference of frequency range also the clock frequency of 485 is 3.4 megahertz whereas the frequency range of the 8086 it is from 5 to 10 megahertz okay so in this video we studied about the comparison between the h 0 8 5 0 8 6 micro processor 8 0 8 6 was on higher version or an enhanced version of the 80-85 micro processor so it has more better features than the 80 85 so I hope that this video is clear to you thank you

Difference Between 8085 and 8086 Microprocessor – Microprocessor

2 thoughts on “Difference Between 8085 and 8086 Microprocessor – Microprocessor

  • August 19, 2018 at 11:47 am
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    Mam plz upload the timing diagram video of 8085 Microprocessor

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  • February 21, 2019 at 8:12 am
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    Hello Friends,

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