What is the difference between 392 and 247?
the difference is also doubled
There is no difference in value between "equal" fractions: the difference is zero.
A "difference" is either the result of a subtraction (the difference between 7 and 5 is 7 minus 5), or its absolute value (so that the difference between 7 and 5 is the same as the difference between 5 and 7).
It is a 26.087% difference between 50 and 65
89s51 and 89s52 both are same version of 8051 microcontroller
8051 family
I'm more of a PIC guy, but as far as i understood it, yes 8051 instruction set is the same for all 8051 legacy devices. That includes 89s52. You can find this out in device specific datasheet. For 89s52 it is written in a first row like this "Compatible with MCS®-51 Products".
c mos & smog
4
avr is high speed cmpar to 8051.in 8051 there are less number of instructions
89S52 have 8KB ROM and 256bytes RAM also it supports SPI program downloading but 89C51 have 4Kb ROM, 128bytes RAM and it wont support Serial program downloading. For more details visit www.8051projects.info
architecture
The difference is that those MCUs that start with 80 are romless, those with 87 use EPROM erasable by light
89S52 has ISP so S stands for : Serial in System programmable.
35
The at89c52 are ones that are more advanced. This means that they are programmable compared to the 8051 which is not. So this makes a really big difference.