Practical advice

摘要

Years ago, an engineer named Alan Goodrich gave me a unique piece of advice: Never specify 1k resistors for weak pullups because that resistor value is too popular. If your lab runs low on 1k resistors the day that your assembly technician builds your board, the technician must set the board aside until the purchasing department orders more resistors. A less popular value such as 910Ω works just as well and is always in stock.