BBS: Inland Empire Archive Date: 03-27-93 (19:40) Number: 355 From: EARL MONTGOMERY Refer#: NONE To: ALL Recvd: NO Subj: HEX-BIN.DOC Conf: (2) Quik_Bas

Part I of II 8<------8<--------8<-------8<---- Snip While refreshing my memory on Hexadecimal and Binary notations (and the use of the logical operators <AND> <OR>, I found that it helped to take notes. This is a compilation of those notes. Some phrasing is entirely my own. So if you find any mistakes (other than grammar, sentence structure, or spelling! <smile>) please inform me so I can correct my document file. This document should prove useful to the new programmers. A little info on Hexadecimal notation. Hexadecimal is a numbering system based on 16 elements. Digits are numbered 0 through F as follows: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F Representing the digits 0 through 15. Hexadecimal system uses powers of 16. For example: &H19 (hexadecimal) represents 25 decimal. Let's see why. Starting from the right the power is 1. Therefore 9 X 1 = 9 Moving left the next is power is 16. Therefore 1 X 16 = 16 And 9 + 16 = 25. Let's try another. This time &HFF (hexadecimal) Again starting from the right (F=15) 15 X 1= 15 Moving left 15 X 16 = 240. And 240 + 15 = 255 So far we have looked at single byte hex values. Let's look at a 16 bit hex value. Remember 8 bits to the byte? Now we look at two adjoining bytes, or sixteen bits. &H1902 (hexadecimal) represents 6402 decimal. Again starting from the right 2 X 1= 2 Moving left 0 X 16 = 0 Moving left again <16 X 16 =256> 9 X 256 = 2304 Moving left again <16 X 256 = 4096> 1 X 4096 = 4096 And 2 + 0 + 2304 + 4096 = 6402 In basic hex values are preceeded by &H. For example &HFF or &H1902 In basic hex values can be determined by the command

Echo Basic Postings

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