| ??? 04/16/09 20:41 Read: times |
#164676 - D'oh! You've given it away Responding to: ???'s previous message |
I said:
It is left as an excercise to the student to consider how this may be extended to give ASCII text representation in Hexadecimal notation...
http://www.8052.com/forumchat/read/164655 Richard Erlacher said:
if he wants it in ascii-HEX, he has to compare the binary nybble with 9, then, if the value is 9 or less, add it to 0x30, else, given, now, that the value is greater than 9, he has to subtract 9 and add the difference to 0x41, or perform some equivalent operation. Now you've given it all away! Don't you find those operations quite different, Andy? The principle remains the same in both cases; viz, 1. Isolate the individual digits to be displayed;
2. Convert those digits to the appropriate displayable character representation (eg, ASCII). Yes, the implementation detail of step 2. is somewhat more involved - but it still remains an exercise in converting the digit value to displayable form. Thus the generic description holds. |
| Topic | Author | Date |
| 16bit number to ascii | 01/01/70 00:00 | |
| Base conversion. | 01/01/70 00:00 | |
| Number Base (Radix) and Place Value | 01/01/70 00:00 | |
| ASCII | 01/01/70 00:00 | |
| Right ... I forgot about that part. | 01/01/70 00:00 | |
| What I'd wonder ... | 01/01/70 00:00 | |
| Is it relevant? | 01/01/70 00:00 | |
| That's somewhat of a description | 01/01/70 00:00 | |
| D'oh! You've given it away | 01/01/70 00:00 | |
| Well ... not quite ... | 01/01/70 00:00 | |
| That was step 1. | 01/01/70 00:00 | |
| not hard when talking in human language or C... | 01/01/70 00:00 | |
| Irrelevant | 01/01/70 00:00 | |
| Op code? | 01/01/70 00:00 | |
| Ah, yes ... the Fairchild FND-70 driver ... | 01/01/70 00:00 | |
| nybble-to-7-segment encoder | 01/01/70 00:00 | |
| if... | 01/01/70 00:00 | |
| 30 years ago | 01/01/70 00:00 | |
| That's a BIG if | 01/01/70 00:00 | |
| Serial output | 01/01/70 00:00 | |
| That might work in SOME cases ... | 01/01/70 00:00 | |
| But I'm not that fast | 01/01/70 00:00 | |
What about infrequently recurring events? | 01/01/70 00:00 | |
| FND-70 driver? Luxury! | 01/01/70 00:00 | |
| Decoding DTMF | 01/01/70 00:00 |