【正文】 9R 2 0R 2 1R 2 2R 2 3R 2 4R 2 5R 2 6R S T12U 1 1A7 4H C 1 43 4U 1 1B7 4H C 1 45 6U 1 1C7 4H C 1 489U 1 1D7 4H C 1 41011U 1 1E7 4H C 1 41213U 1 1F7 4H C 1 4C30 .1 UC40 .1 UR 3 21 0KR 3 11 0KD4D3R 2 91 0KC51 0UR 3 01 0KV C CR 2 7R 2 8C? C A PC?C A PD6D5D7R 3 31 0kD8GND68 分圖 1:時鐘、紅、黃、綠燈 1 2 3 4 5 6ABCD654321DCBAT i t l eN u m be r R e v i s i o nS i z eBD a t e : 1 5 N ov 20 0 8 S he e t o f F i l e : F : \孫其昌文件 \ k c s j \ 5 s 6 D B D r a w n B y:C I N11C O U T9C O U T10R S T12Q47Q55Q64Q76Q814Q913Q 1 015Q 1 21Q 1 32Q 1 43U14 06 0C L K1EN2R7Q03Q14Q25Q36U 2 A4 51 8A1B2Q03Q14Q25Q36Q410Q511Q612Q713C L K8MR9U37 4H C 1 6 4123U 4 A7 4H C 0 8456U 4 B7 4H C 0 88910U 4 C7 4l H C 08111213U 4 D7 4H C 0 81 2U 5 A7 4H C 0 43 4U 5 B7 4H C 0 45 6U 5 C7 4H C 0 489U 5 D7 4H C 0 41011U 5 E7 4H C 0 41213U 5 F7 4H C 0 4P015P11P210P39CU5CD4Q03QB2QC6QD7T C U12T C D13PL11MR14U6 7 4H C 1 9 2P015P11P210P39CU5CD4Q03QB2QC6QD7T C U12T C D13PL11MR14U7 7 4H C 1 9 2A7B1C2D6LT3BI4LE5A13B12C11D10E9F15G14U8 4 51 1A7B1C2D6LT3BI4LE5A13B12C11D10E9F15G14U9 4 51 1R11 0MR21 50 KC Y 13 2. 7 68 kC15 1PC25 1PGNDG1Y1R1G2Y2R2R33 90R43 90R53 90R63 90R73 90R83 90L1L G 1L2L Y 1L3L R 1L4L G 2L5L Y 2L6L R 2GNDR91 0KR 1 01 0KR 1 11 0KD1D2R 1 21 0KabfcgdeD P Y76421910abcdefg5dpdpcom3com8D S 1D P Y _7 S E G _D PabfcgdeD P Y76421910abcdefg5dpdpcom3com8D S 2D P Y _7 S E G _D PR 1 3 R 1 4 R 1 5R 1 6R 1 7R 1 8R 1 9R 2 0R 2 1R 2 2R 2 3R 2 4R 2 5R 2 6R S T12U 1 1A7 4H C 1 43 4U 1 1B7 4H C 1 45 6U 1 1C7 4H C 1 489U 1 1D7 4H C 1 41011U 1 1E7 4H C 1 41213U 1 1F7 4H C 1 4C30 .1 UC40 .1 UR 3 21 0KR 3 11 0KD4D3R 2 91 0KC51 0UR 3 01 0KV C CR 2 7R 2 8C? C A PC?C A PD6D5D7R 3 31 0kD8GND69 分圖 2：倒計時指示燈 1 2 3 4 5 6ABCD654321DCBAT i t l eN u m be r R e v i s i o nS i z eBD a t e : 1 5 N ov 20 0 8 S he e t o f F i l e : F : \孫其昌文件 \ k c s j \ 5 s 6 D B D r a w n B y:C I N11C O U T9C O U T10R S T12Q47Q55Q64Q76Q814Q913Q 1 015Q 1 21Q 1 32Q 1 43U14 06 0C L K1EN2R7Q03Q14Q25Q36U 2 A4 51 8A1B2Q03Q14Q25Q36Q410Q511Q612Q713C L K8MR9U37 4H C 1 6 4123U 4 A7 4H C 0 8456U 4 B7 4H C 0 88910U 4 C7 4l H C 08111213U 4 D7 4H C 0 81 2U 5 A7 4H C 0 43 4U 5 B7 4H C 0 45 6U 5 C7 4H C 0 489U 5 D7 4H C 0 41011U 5 E7 4H C 0 41213U 5 F7 4H C 0 4P015P11P210P39CU5CD4Q03QB2QC6QD7T C U12T C D13PL11MR14U6 7 4H C 1 9 2P015P11P210P39CU5CD4Q03QB2QC6QD7T C U12T C D13PL11MR14U7 7 4H C 1 9 2A7B1C2D6LT3BI4LE5A13B12C11D10E9F15G14U8 4 51 1A7B1C2D6LT3BI4LE5A13B12C11D10E9F15G14U9 4 51 1R11 0MR21 50 KC Y 13 2. 7 68 kC15 1PC25 1PGNDG1Y1R1G2Y2R2R33 90R43 90R53 90R63 90R73 90R83 90L1L G 1L2L Y 1L3L R 1L4L G 2L5L Y 2L6L R 2GNDR91 0KR 1 01 0KR 1 11 0KD1D2R 1 21 0KabfcgdeD P Y76421910abcdefg5dpdpcom3com8D S 1D P Y _7 S E G _D PabfcgdeD P Y76421910abcdefg5dpdpcom3com8D S 2D P Y _7 S E G _D PR 1 3 R 1 4 R 1 5R 1 6R 1 7R 1 8R 1 9R 2 0R 2 1R 2 2R 2 3R 2 4R 2 5R 2 6R S T12U 1 1A7 4H C 1 43 4U 1 1B7 4H C 1 45 6U 1 1C7 4H C 1 489U 1 1D7 4H C 1 41011U 1 1E7 4H C 1 41213U 1 1F7 4H C 1 4C30 .1 UC40 .1 UR 3 21 0KR 3 11 0KD4D3R 2 91 0KC51 0UR 3 01 0KV C CR 2 7R 2 8C? C A PC?C A PD6D5D7R 3 31 0kD8GND70 數(shù)字電子鐘設(shè)計 設(shè)計任務(wù)和要求 （ 1）設(shè)計任務(wù) 用中、小規(guī)模數(shù)字集成電路設(shè)計一臺能顯示時、分、秒的數(shù)字電子鐘。 工作原理和系統(tǒng)組成框圖 （ 1）設(shè)計要點； ? 設(shè)計一個精確的秒脈沖信號發(fā)生電路； ? 設(shè)計 60進制、 24電路進制計數(shù)器； ? 設(shè)計操作方便的校時電路； ? 設(shè)計整點報時電路。 整體電路原理圖 元器件清單 總結(jié) 73 數(shù)字電子鐘 1 2 3 4ABCD4321DCBAT i t l eN u m be r R e v i s i o nS i z eA4D a t e : 2 0 A pr 2 0 07 S he e t o f F i l e : F : \ k c s j \ Z H O N G 1. D D B D r a w n B y:C3VDD R 5 0 D7E1V C CR 4 9Q19 01 3VDDR 5 3R 5 2D64 14 8D5D4D3R 5 12 0kR48R 4 7R 4 6R 4 5R 4 4R 4 3R 4 2R 4 1R 4 0R 3 9R 3 8R 3 7R 3 6R 3 5R 3 4R 3 3R 3 2R 3 1R 3 0R 2 9R 2 8R27R 2 6R25R 2 4R 2 3R 2 2R 2 1R 2 0R 1 9R 1 8R 1 7R 1 6R 1 5R 1 4R 1 3 R 1 2R 1 1R 1 0R9 3 90R8R7R6V C CD1D2R 7 2R 7 3R 7 4R 7 5R 7 7R 7 6 R 6 6R 6 5R 6 8R 6 7R 6 9R 7 0R 7 1 R 6 4R 6 3R 6 2R 6 1R 6 0R 5 9R 5 8R5R4R3S3S2S1C Y 1C2 C1R2R1A7B6C4D2E1G10DP5COM28F9COM13L6 L E DA7B6C4D2E1G