On Sun, 18 Jun 2017, Evan Koblentz via vcf-midatlantic wrote:
Set the address switches to 100 (octal)
It's like a light bulb has illuminated and is reflecting off my bald head! I've long been able to do the long-form math (on paper) for octal/hex, but now I suddenly "get" what someone means by "set the address switches to 100 (octal). Off/off/on -- off/off/off -- off/off/off. Better late than never, huh?
It's all just ones and zeroes. :-) All you really need to know is this: 8 4 2 1 Hex Dec Oct ------------------------------- 0 0 0 0 0 0 0 0 0 0 1 1 1 1 0 0 1 0 2 2 2 0 0 1 1 3 3 3 0 1 0 0 4 4 4 0 1 0 1 5 5 5 0 1 1 0 6 6 6 0 1 1 1 7 7 7 1 0 0 0 8 8 10 1 0 0 1 9 9 11 1 0 1 0 A 10 12 1 0 1 1 B 11 13 1 1 0 0 C 12 14 1 1 0 1 D 13 15 1 1 1 0 E 14 16 1 1 1 1 F 15 17 Want to convert a hex number to binary? Just decode each hex digit (I know, it's not really a digit) to its 4-bit binary equivalent, left to right: e.g. B5 hex => 10110101 binary Want to convert that to an octal number? Just group the bits by threes, starting with the Least Significant Bits (LSB), then insert the octal equivalent for each group of three: 10 110 101 => 265 octal I was going to go over this with you last weekend, but didn't get around to it. :-) Mike Loewen mloewen@cpumagic.scol.pa.us Old Technology http://q7.neurotica.com/Oldtech/