Isaha Byose byatangiranye numukino woroshye mubyiciro byo guhanga: ingingo yari "isaha". Rero, amasaha atandukanye yurukuta yaba digitale na analog, yarasuzumwe kandi arakorerwa ubushakashatsi. Igitekerezo cyambere cyatangijwe nubuso buke bwamasaha aribwo pin isanzwe imanikwa. Ubu bwoko bwisaha burimo silindrike ya pole yashizwemo imishinga itatu. Izi porogaramu zitanga imashini eshatu zihari zisa nizisanzwe zisanzwe. Ariko, barateganya nimero.