Controller Main Classification

Cov tswj tau muab faib ua ke nrog cov logic controllers thiab microprogram controllers, ob qho tib si muaj lawv qhov zoo thiab qhov tsis zoo. Combination logic controllers yog cumbersome rau tsim thiab muaj ib tug complex qauv. Thaum tsim tiav, nws tsis tuaj yeem hloov kho lossis nthuav dav, tab sis nws qhov nrawm nrawm. Lub microprogram maub los yooj yim tsim, yooj yim hauv cov qauv, thiab yooj yim los hloov lossis nthuav. Txhawm rau hloov kho cov haujlwm ntawm lub tshuab kev qhia, koj tsuas yog yuav tsum tau reprogram cov microprogram sib raug; Txhawm rau ntxiv cov lus qhia tshuab, koj tsuas yog yuav tsum ntxiv ib ntu ntawm microprogram hauv kev tswj hwm lub cim xeeb. Txawm li cas los, nws ua li ntawd los ntawm executing ib tug shred. Qhov kev sib piv tshwj xeeb yog raws li hauv qab no: Kev sib xyaw logic maub los, tseem hu ua hard-wired controller, yog tsim los ntawm logic circuits thiab tag nrho tso siab rau kho vajtse kom paub txog kev ua haujlwm ntawm cov lus qhia.