I ve been doing a lots of my research for the best procesor to do large sums. is the arm betta fior it? can the x51 do any thing more than 7 bit? you tell me the answers.
One byte can handle -128 to +127. Or 0 to 255. Two bytes can handle -32768 to +32767 or 0 to 65535. ... 1024 bytes can handle -2^8191-1 to +2^8191 which is about -10^2465 to +10^2465.
10^2465 is a one followed by 2465 zero!1000000000000000000000000000000000000000000000000000000000000000000000000000... ...0000000000000000
Many pocket calculators can compute numbers between -10^99 to +10^99 with a 4-bit or 8-bit processor. The 8051 is an 8-bit processor so it can work with just as large numbers as a normal technical pocket calculator can.
The trick is that you split the number into multiple bytes, just like you split a number into multiple digits (0..9) when you compute a sum in your head or on paper. Only the amount of memory in the processor, or the size of the paper, will limit how big numbers you can work with.