| Device | Total Pins | Memory | Maximal Frequency | Total I/O Pins | Interrupt Source/ Timers | Total Instructions | ||
| Program | Data | |||||||
| RAM | EEPROM | |||||||
| PIC16C83 | 18 | 512 Words (14-bit) | 36 Bytes | 64 Bytes | 10 MHz | 13 | 4/ 0 | 35 |
| PIC16C84 | 18 | 1K Words (14-bit) | 36 Bytes | 64 Bytes | 10 MHz | 13 | 4/ 0 | 35 |
| PIC17C42 | 40 | 2K Words (16-bit) | 232 Bytes | ** | 25 MHz | 33 | 11/ 0-3 | 58 |
| PIC17C43 | 40 | 4K Words (16-bit) | 454 Bytes | ** | 25 MHz | 33 | 11/ 0-3 | 58 |
| 87C51 | 40 | 4K Words (8-bit) | 128 Bytes | ** | 24MHz | 32 | 5/ 0-1 | 110 |
| AT89C51 | 40 | 4K Words (8-bit) | 128 Bytes | ** | 24MHz | 32 | 5/ 0-1 | 110 |
| AT89C52 | 40 | 8K Words (8-bit) | 256 Bytes | ** | 24MHz | 32 | 8/ 0-2 | 110 |
Answers to High School Mathematical Question:a4 + b4 + c4 = 9Let f(k) = ak + bk + ck. we have f(k+1) = f(1)f(k) - (ab + bc + ca)f(k-1) + abcf(k-2) where ab + bc + ca = 2 and abc = -2/3.
Last Modified: 星期一, 八月 21, 2006 10:39:44 上午