2-Mavzu. Kompyuterlarni tashkil qilishning raqamli mantiqiy asoslari

USB (Universal system bus) – Compaq, DEC, Microsoft, IBM, Intel, NEC firmalarining birgalikda ishlab chiqqan standarti. Birinchi tasdiqlangan varianti 1996 yil 15 yanvarda paydo bo’ldi va bitta interfeys yordamida ko’plab va har xil turdagi tashqi qurilmalarni bog’lashni tashkil etish uchun mo’ljallangan.

USB (Universal system bus) – Compaq, DEC, Microsoft, IBM, Intel, NEC firmalarining birgalikda ishlab chiqqan standarti. Birinchi tasdiqlangan varianti 1996 yil 15 yanvarda paydo bo’ldi va bitta interfeys yordamida ko’plab va har xil turdagi tashqi qurilmalarni bog’lashni tashkil etish uchun mo’ljallangan.

USB standarti «mijoz-server» arxitekturasi bo’yicha («Master-slave» terminologiyasi ishlatiladi) o’zaro munosabatni o’z ichiga oladi va 127 ta qurilmani ketma-ket ulashga yoki 7 ta qurilmagacha ulangan USB konsentratordan (hub) foydalanishga imkon beradi.

Technician characteristics . USB options ( version 1.1 ):

Technician characteristics . USB options ( version 1.1 ):

• exchange high speed ( full - speed signaling bit rate ) - 12 Mbit / s;
• high exchange speed for cable maximum length - 5 m;
• past exchange speed mode ( low - speed signaling bit rate ) - 1.5 Mbit / s;
• low rate of exchange for cable maximum length - 3 m ;
• connecting devices maximum soni - 127;
• exchange speed different kind of which was devices connect possibility _

Texnik xarakteristikalari. USB imkoniyatlari (1.1 versiyasi):

Texnik xarakteristikalari. USB imkoniyatlari (1.1 versiyasi):

• almashtirishning yuqori tezligi (full-speed signaling bit rate) - 12 Mbit/s;
• yuqori almashish tezligi uchun kabelning maksimal uzunligi – 5 m;
• past almashish tezlik rejimi (low – speed signaling bit rate) – 1,5 Mbit/s;
• almashsishning past tezligi uchun kabelning maksimal uzunligi – 3 m;
• ulanadigan qurilmalarning maksimal soni – 127;
• almashish tezligi turli xil bo’lgan qurilmalarning ulash mumkinligi.