These utilised synchronizers to match gear speeds, allowing for smoother shifts and less difficult driving. The mid-20th century noticed the introduction of computerized transmissions.  Manual transmissions can have a gear persist with change gears, with the help of the clutch pedal. In the meantime, computerized gearboxes handle gear modifications electronically, https://automobile-gearbox19740.tusblogos.com/34399801/automobile-gearbox-fundamentals-explained