本文探讨了浮点数表示及其运算限制，并讨论了如何通过科学记数法提高精度。此外，还介绍了二进制编码十进制(BCD)的概念及字符集如ASCII和Unicode。
AOA - More data representation
1) floating point (real) numeric format
a) Limitation of floating point arithmatic
- Normal algebraic rules ----> infinite precision arithmetic (as long as overflow does not occur)
b) when doing adding and subtracting in scientific notation, we must adjust two values so their exponent are the same
c) Guard bits/Guard digits --> to improve the accuracy
2) Binary Coded Decimal (BCD)
3) Character sets: a) ASCII b) Unicode
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