74ls75功能表
![数字电路-器件功能表](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E830D03DC61393D24FA77893C7F1A5256B86D56C9A1CDD4CBB97E3B1E34FFE4E27238B79096D96E6FFE16BDE96033B0960724230454291B2E2FD343F838EC70C320763C91AE98AEF9DF1B75BF3994A676BE)
数字电路-器件功能表
图片尺寸920x1302![2 74ls248的管脚和功能表](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E948A5A8F5C138DA5099F09FA398225E7A812F4CE8F7D3251FAA925A3DDA20A6D4433C1F8FD2A5F837310ABE24D7DC9B21969E4DC858CA8CAD7CDC0C4CCDD21A4ABF8786168677034C6BDA3E07D56E9C32)
2 74ls248的管脚和功能表
图片尺寸1022x467![1.1(a)与(b)分别为74ls161的引脚排列图与逻辑功能示意图.](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E834DF046E2AC6D7E4CD13BDEAB92523808B46C290AA69055F86CBACC9F2205461BC1A4AB70FED263ADEC51E7FEA9E2DA11D0BDC95173D664610BD7258807B4C1254A9EF3741382EBD79EE78566BA9075F1)
1.1(a)与(b)分别为74ls161的引脚排列图与逻辑功能示意图.
图片尺寸1169x661![所有分类 高等教育 工学 计算机硬件-实验报告-tyut 74ls181 的功能](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9B91B30BA7413BA510D5BE39C955718314B185A5CD4FFEEF6DC0496BEE12968B663857976511BE5BC62C1BC8C3FEAC70CE1134D21C09343693EF022ACF46A41AE670AFBA12BBE30D975A57CBB9F7B57F9)
所有分类 高等教育 工学 计算机硬件-实验报告-tyut 74ls181 的功能
图片尺寸652x1048![正常使用时,常使3脚和4脚都接高电平,5脚随意,此时74ls48的真值表如表](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E94FA555B951F38DA4B372BE4968BEA739D1DBC3B3D3E61A3D60D9E4B8C27B49BCB0A8FBD81792D9348D132A28A2C3CAF2A4E20691019009248499A623D64A7011FFB9DA6C41A2DAA1F6D450C57E270FF8)
正常使用时,常使3脚和4脚都接高电平,5脚随意,此时74ls48的真值表如表
图片尺寸495x314![74ls92十二分计数器|2010-09-0174系列数字电路7492.](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E93ADF76904D1D8DCD600902ADB574AACDD45863F6C3C3D49755731841B80B37FA8C9A3F6FDC9754B483C23C7F1E750D89E7C0C15C39B069494D5D477C070AFFFE5359D7C6D38DA973D5E71435C552259E)
74ls92十二分计数器|2010-09-0174系列数字电路7492.
图片尺寸1423x1879![实现74hc85的功能以及16位数值比较器](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83FAF3C47CA2AB0B4BCE72FD7F933E04B1BF0E107E831AFE710C55A81423BF77ACEC03E54434AD9AC2274CFCAB5A392CD7AE1BA8BE781AB5430D241520E8770596BE2D79FD6FB050462B2749E6A05CB679)
实现74hc85的功能以及16位数值比较器
图片尺寸1920x1080![从74lsl48的功能表可看出,ei为片选控制端,当它为有效电平0时,电路](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E835E3BAFB5844D3F3DB58AA4A61FFD343B456EE716E49A61815324AB2CA9807B48FC2CE296028ADD1880470F27799EE667D72CBEB6FC116C1C72982E1B7F6992EF234B319D345B9649FF4BBF136DAD9D87)
从74lsl48的功能表可看出,ei为片选控制端,当它为有效电平0时,电路
图片尺寸847x395![74ls191技术社区](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73423774FC88F2CE777D6DA4EA0E46569AEC56817C1A35D2C4FD72C0E1A7D3F92F3FA5A33453BFE9B3F6573931BC1B2934D37351DF58BC9842CC3D589A681BAD3D4CFD439E97813B4BD3435E23A761C54D)
74ls191技术社区
图片尺寸1445x1368![1 74ls148功能表](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83CF84A924B438590749A3175DABA898FF78C449A5DE1751255B468A26240159A76541320060A359EECBB33BBA16315687738F341A93BD258CC1E0793677CB0D5DE6570DDF841AEE460FE45E175A440718)
1 74ls148功能表
图片尺寸1080x810![74ls139的功能表 的功能表 s a1 x a0 x](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E833348818445689C468626D9EE3DC4FE5A9E9FE44AF1CDE3F5FDB18532AC242057CB721DEDCB967631591E52C26A8B639A6FD9A855B25529CD2DEFA1CA508EDEFB95CE4698D87154D6095EB8CBCE7DF7A1)
74ls139的功能表 的功能表 s a1 x a0 x
图片尺寸1080x810![表6-7 优先编码器74ls147功能表74ls147的输出为8421bcd码,它的逻辑图](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E833D9B282421C37ABA2D8CE89665D2E71A506ED9587439A42A3DEC384147A4474F5FC60CE9F5837D3DFE4CC9903593BF127CC757AE0935F953A71064D018D41132AF522B4BE7C38A65CC7B98C8AD06FFE2)
表6-7 优先编码器74ls147功能表74ls147的输出为8421bcd码,它的逻辑图
图片尺寸1504x737![74系列数字电路74290,74ls290十进制计数器系列数字7429074ls290十](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9F7AFE0AC72DB268601D6F4FB807B565A8A9F606BE6B3FD2EED63CD410D057554C03844AD03B0BC05A12438E6D701C64C50808285FDA94377A08767CBE6386BA829D68B75944ECC84D14D6C462815D32D)
74系列数字电路74290,74ls290十进制计数器系列数字7429074ls290十
图片尺寸1487x762![要求使用两片74ls153 实现逻辑函数f(a, b,c,d) =∑m(2,7,13,15),在](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A7312FDA5688511146BA28078A22D4D32CE09D20FB803F044AEA2FA91F6550C2B6C5ADDB94C73ADEA903145C0FE11C4E2783B21129CCAB7485BE9A63C26FC3A20547D07426C2644C31AB6CAAFC1306176DB)
要求使用两片74ls153 实现逻辑函数f(a, b,c,d) =∑m(2,7,13,15),在
图片尺寸1155x569![1075_510](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E833905F4F0DBEC528145C9EBCCA37BEE03432C87AAF048B9DC3EFBB70C7BC537F2BE346842469F1E21E503449A04F9C87AFA7D0933E435FF60BA924B15B4174DF2C9109EC63EDD567F4F9CCFC9E3622347)
1075_510
图片尺寸1075x510![74系列数字电路7419274l192等到可预置bcd十进制同步可逆计数器双时钟](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83F4D41C7E0E789B3AA1AA7799CD521E64F13F9869E701C76013AFBB15C88C3858655FC97C59FCF618FFBCF18710B97D006C0C614F8AAE023633917ECE3CB16ACDD9FE86D1F3D455C56AAC8DF5846538CA)
74系列数字电路7419274l192等到可预置bcd十进制同步可逆计数器双时钟
图片尺寸1493x1482![74ls247功能表图3 74ls247引脚图表2和图3分别示出七段译码器74ls247](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73A8D9232BF1B0211FE5684446B193D12D871D92E740AE3D411067364B8323A9B0548D0B22BCF9BDA9A2DFBB76B25356C3344B3EE7F54AA584D793D802710631E6A1CCDF977DDFCA56CF7C5C73224196C3)
74ls247功能表图3 74ls247引脚图表2和图3分别示出七段译码器74ls247
图片尺寸500x365![2.1 主从rs触发器ct74ls7功能表](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E837AEA34E36C0B5445ABE94D68BD3D166B98AE5FFE2F6AF24894F4046539F26AA940E3318822039A2A3191FF7CA1D6F8610814284E2E7C0738238182B14DD4F45D6DF3585E459B7D0AB6F2BDCFDFB38143)
2.1 主从rs触发器ct74ls7功能表
图片尺寸410x221![74ls293二进制计数器|2010-09-0174系列数字电路74290,74ls2](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A7385398E61C9B69FF6B4626392D8AF55D138323B0B003C7B149E7C3FD6D0F1EEA790BCFC67EE206995E4343F76DDAB5C409F569437BE87287C02CC9178E7A8485B7C8382827AA7B45E2C98F4253319876E)
74ls293二进制计数器|2010-09-0174系列数字电路74290,74ls2
图片尺寸1524x2197![74系列数字电路7429374ls293等4位二进制计数器](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73F8694399FF6432B679C0EE6E27033853360B9B69ADAB7FA90832F17067C78D86590FB3DEAD512AD7AB530387AF33CC53C81D442B0E4EF7A273A995048E36BC52FF7AADFA3D561F9A774816BB7B864FD6)
74系列数字电路7429374ls293等4位二进制计数器
图片尺寸1386x2514