Okay so instead of in place value going 1,10,100 in binary you go 1,2,4 so it would go 256:1,128:0,64:0,32:1,16:1,8:0,4:0,2:0,1:1=1+16+32+256=305. So 100110001=305 in binary. It is also would take 1+1/2 bytes or 9 bits to store the number. Hope this helps.
