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CHU BIEN: PTS D 6 K IM BANG
LY THUYET & UNG DUNG
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PTS. DO KIM BANG M` Bien soan g f -1
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NHA XUAT BAN LAO DONG - XA HOI HA NOI - 2004
LQ1H 0 3 B & I
Ngay nay, ky thuat digital dUOc ap dung rong rai trong nhieu ITnh virc. Cac mach digital dude dira vao sirdung trong hang loat cac san pham dien tif, nhi/ cac thiet bi vien thong, may ti`nh, ti_r dong hoa, cac do choi co mach dien tCr, cac he thong nghe nhin, do gia dung, dung cu do luting, dung cu y te va quan sir, cac tur dien dien tCr
Sach Ky thuat digital - ly thuyet va Crng dung gidi thieu nhCrng kien thud co ban ve ky thuat digital va mot so irng dung trong doi song. Be tiep thu cac kien thud de cap trong cuon sach nay, ban doc can co nhCrng kien thud pho thong ve toan va ve mach dien tir. Ky thuat digital dude nghien ciru trutic hoac nghien cuti song song v i mon hoc dien tir co ban vi cac kien thud ve linh kien ti`ch cifc rdi rac khong phai la dieu kien doi hoi trutic het.
Co the noi, cuon sach nay la ngirdi ban dong hanh cua cac ban ham thich dien ti!r digital, cua cac cong nhan nganh dien tu”- vien thong va may ti`nh cGng nhif cua cac cong nhan lanh nghe thuoc cac ITnh vut co lien quan den cac mach dien tu digital. Cuon sach nay dirpc xem nhir la tai lieu tham khao hCru dung vi ti`nh thut dung va de hieu cua no doi vdi cac sinh vien cao dang va dai hoc nganh dien tCr -vien thong va may ti`nh.
Sach Ky thuat digital - ly thuyet va u"ng dung co 11 chirong. Chi/ong 1 khai quat ve cac he thong so nhi phan, bat phan va thap luc phan, moi lien quan giCra cac he thong nay vdi he thong so thap phan, chi/Ong nay cGng gidi thieu tong quan cac ma diroc sCr dung trong ITnh vi/c vien thong va may tfnh. Chutfng 2 gidi thieu ve dai so logic, phan tich va tong hop mach logic, cac djnh ly De Morgan, cac phifOng phap toi gian mach bang bang Karnaugh, bang cac dinh ly va dinh luat cua dai so logic. Chi/dng 3 gidi thieu cac mach xir ly so lieu, de cap den cac bo ghep kenh, phan kenh, cac bo giai ma, ma hoa, bo tao va kiem tra bit chan le. Noi dung Chi/ong 4 noi ve phep cong, phep trif so hoc, cac phep bu 1, bu 2 va cac bo niTa cong va cong day du, de tirdo, ta hieu di/Oc can ke cac bo cong va bo trir. ChiTOng 5 gidi thieu cac ho IC TTL va CMOS, noi dung de cap trong phan nay giup ta co cac kien thut co ban de sCr dung co hieu qua va phoi ket hop di/oc cac ho IC TTL va CMOS trong cac mach digital. Noi dung cac Chuting , ChiTOng 7 va ChGOng di/oc u`ng dung nhieu trong cac mach dien tu digital thong thuting. ChifOng gidi
thieu cac loai flip flop RS, RS dong bo tTnh, flip flop D, flip flop JK va flip flop JK Master-Slave; ngoai ra, con gidi thieu trigo Schmitt, loai trigo co dac ti`nh quan trong, dude su` dung de tao nen cac xung nhip; Chudng nay cung gidi thieu cac loai mach dao dong, mach tao xung nhip. Noi dung ChUdng 7 thirc chat la cac u’ng
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dung dac ti`nh cua cac flip flop diroc ti`ch hap trong cac IC de thirc hien cac phep di chuyen so lieu. Trong chirong , noi dung diroc de cap la cac loai bo dem va cac Mod dem; tir chirong nay, ta thay diroc cac cau true va cac iru nhiroc diem cua cac loai bo dem. Chirong 9, bo nho ban dan va chirong 10, chuyen doi A/D va chuyen doi D/A, hai chirong nay gidi thieu ve nhCrng nguyen ly cau tao co ban va cac dac ti`nh cua cac bo nho ban dan, cac bo chuyen doi A/D va chuyen doi D/A, giup ta co the Crng dung cac bo kien nay trong cac mach dien tir digital. Chirong 11 dira ra mot so mach Crng dung ky thuat digital, nhir trong dung cu dem tan, do do rong xung va trong dong ho digital... Co the xem chirong 11 nhir la mot so bai tap Ion, Crng dung ky thuat digital, tir do, ta co the van dung ky thuat digital vao cac Crng dung khac trong doi song hang ngay.
Voi dung y cuon sach Ky thuat digital - ly thuyet va Crng dung diroc viet de pho cap rong rai kien thCrc ve digital, voi cach trinh bay de hieu, co nhieu vi du, nhieu bai tap va loi giai. Tac gia rat mong cuon sach diroc dong dao cac cong nhan lanh nghe cung nhir cac sinh vien cao ding va dai hoc nganh dien tir - vien thong va may ti`nh, cac ban yeu thi`ch ky thuat dien tir digital rut ra diroc nhCrng dieu bo ich tu” cuon sach nay.
Trong qua trinh bien soan va in an, cuon sach khong the tranh khoi con nhCrng thieu sot. Chung toi rat mong ban doc thong cam va gop y xay diing, de trong Ian tai ban, cuon sach diroc hoan thien hon.
Chung toi xin gCri toi Ban Bien tap Nha Xuat ban Lao dong - Xa hoi loi cam on chan thanh ve sir giup do qui bau cua Qui Ban, de cuon sach s m dGOc ra m§t ban doc.
DO KIM BANG
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CHUONG 1
HE THONG SO VA MA ■
Hoc xong chuang nay, hoc vien co kha nang:
□ Hieu dwoc cac he dem thap phan, nhi phan, bat phan va thap luc phan.
□ Chuyen doi d`uoc cac so tit he thap phan sang cac he nhi phan, bat phan va thap luc phan va ngwoc lai.
□ Tinh d`L/oc cac gia tri cua cac so phan nguyen va phan phan tit cac he nhi phan, bat phan va thap luc phan sang cac so tuong ditong cua he thap phan va ngitdc lai.
□ Hieu diroc cac cau true mot so ma thong thudng dung trong ky thuat digital.
TONG QUAN
Khi noi den so dem, moi ngirdi deu nghT ngay den he thap phan v6i 10 con so: 0, 1,2, 3, 4, 5, , 7, , 9. May vi tinh hien dai khong xir ly so thap phan. Thay vao do la he thong so nhi phan sir dung 2 con so: 1 va 0. Nhi/ng khi sir dung so nhi phan, muon the hien mot so thap phan co tri so tirong doi Ion bang so nhi phan thi so nhi phan do kha dai. Do do, ngirdi ta thirdng sir dung cac so bat phan va thap luc phan de rut ngan chuoi so nhi phan.
Chirong nay trinh bay cac he nhi phan, bat phan va thap luc phan v i muc di`ch khong chi dem diroc cac so theo cac he dem tren day ma con nghien ciru each chuyen doi tir he dem thap phan sang cac he dem nhi phan, bat phan va thap luc phan va ngiroc lai. Chu’Ong nay cung de cap den cac ma nhi phan thirdng diroc su` dung trong cac he thong digital.
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