
02342134
j
2012b.00587
Hvoreck\'y, Josef
Relation between Roman numbers and the representation of negative numbers in a computer. (O vz\'tahu medzi r\'\i mskymi \v cislami a zobrazen\'\i m z\'aporn\'ych cel\'ych \v c\'\i sel v po\v c\'\i ta\v ci.)
Mat. Fyz. Inform. 10, No. 6, 360367 (2000).
2000
,
SK
F40
When reading numbers given in Roman numerals, we imagine that the digit preceding a bigger digit has a negative sign. For instance, MCDXIX = M  C + D + X  I + X = 1419. One way of representing integers in a computer (in a binary system) is to assign the first digit from the left (as the only one of the digits) a negative sign. For instance, when using 8 bits $1000 0101 = 1.2^7 + 1.2^2 + 1 = 128 + 4 +1 = 13, 0000 0101 = 1.2^2 + 1 = 5$. The contribution includes more details.