Microsecond (µs)
Definition: Microsecond na one millionth of one second.
History/origin: Microseconds come popular as electrical engineering, audio systems, and computing need more accurate timing pass milliseconds.
Current use: Microseconds dey used for embedded systems, sensors, audio processing, robotics, and data transmission timing.
Day (day)
Definition: Day na normal calendar time unit based on Earth rotation. For converters, dem dey treat 1 day as 24 hours or 86,400 seconds.
History/origin: Long before mechanical clocks, people track time with sunrise, sunset, and the repeating light–dark cycle wey later become the civil day.
Current use: Days dey used for due dates, delivery windows, travel plans, medication intervals, streaks, reservations, payroll periods, and calendar-based scheduling.