| Subject | English | Italian |
| IT | automatic recording of clocking in system for out | sistema di raccolta di orari |
| industr., construct. | clock for electric clock system | apparecchio di orologeria per circuito di distribuzione e di unificazione dell'ora |
| mun.plan., commun. | clock system | impianto segnalazione oraria |
| el. | inverted clock-pulse system | sistema a impulso di sincronizzazione invertito |
| el. | system clock | orologio di sistema |
| comp., MS | system clock | clock di sistema (The electronic circuit in a computer that generates a steady stream of timing pulses--the digital signals that synchronize every operation. The system clock signal is precisely set by a quartz crystal, typically at a specific frequency between 1 and 50 megahertz. The clock rate of a computer is one of the prime determinants of its overall processing speed, and it can go as high as the other components of the computer allow) |