8085: Lub ntsiab yog vim li cas ntawm multiplexing chaw nyob thiab cov ntaub ntawv tsheb npav yog txo cov pins rau chaw nyob thiab cov ntaub ntawv thiab muab cov pins rau lwm yam haujlwm ntawm microprocessor Cov txheej txheem multiplexed ntawm cov kab siv los nqa qhov kev txiav txim qis 8 ntsis chaw nyob nrog rau cov ntaub ntawv tsheb npav.
txhais tau li cas los ntawm multiplexed chaw nyob thiab cov ntaub ntawv tsheb npav?
Qhov chaw nyob multiplexed thiab cov ntaub ntawv tsheb npav yog lub tsheb npav teeb tsa uas tus pins chaw nyob tau koom nrog DQ cov cim. Los ntawm kev siv cov pins sib koom, tag nrho tus lej suav raug txo qis piv rau cov khoom lag luam uas siv qhov chaw nyob thiab cov ntaub ntawv teeb tsa lub npav.
Tus processor twg muaj ntau qhov chaw nyob thiab cov ntaub ntawv tsheb npav?
Intel multiplexed chaw nyob & cov ntaub ntawv tsheb npav, siv tib tus pins nqa ob pawg ntaub ntawv: chaw nyob & cov ntaub ntawv. - Pins 9-16 (AD0–AD7) yog siv rau ob qho tib si cov ntaub ntawv thiab chaw nyob hauv 8088. AD stands rau "chaw nyob / cov ntaub ntawv." - ALE (chaw nyob latch enable) tus pin teeb liab seb cov ntaub ntawv ntawm tus pins AD0–AD7 yog chaw nyob lossis cov ntaub ntawv.
Dab tsi yog qhov teeb meem nrog multiplexed chaw nyob cov ntaub ntawv tsheb npav?
Ib qhov tsis zoo nrog qhov chaw nyob / cov ntaub ntawv tsheb npav yog nws xav tau sijhawm ntxiv los tig lub npav.
Dab tsi yog qhov zoo ntawm multiplexed chaw nyob thiab cov ntaub ntawv tsheb npav?
Qhov laj thawj tseem ceeb ntawm multiplexing chaw nyob thiab cov ntaub ntawv tsheb npav yog txo cov pins rau chaw nyob thiab cov ntaub ntawv thiab muab cov pins rau lwm yam haujlwm ntawm microprocessor Cov kab ntau ntau no siv los nqa qhov kev txiav txim qis 8 me ntsis chaw nyob nrog rau cov ntaub ntawv tsheb npav.
