Useful tips for everyday
Does the Break key do anything? The Break key can be used to end DOS applications — pressing Ctrl+Break terminates a DOS application. This shortcut…
Should you store password salt database? I’ve always used a proper per-entry salt string when hashing passwords for database storage. For my needs, storing the…
How do you calculate the stopping distance of a car? Stopping distance = thinking distance + braking distance Thinking distance is approximately 1 foot for…
How do I sort date and time in Excel? Sort dates or times Select a cell in the column you want to sort. On the…
Which is an amplifier for high side current sensing? High-side current sensing is a pervasive requirement in automotive, telecom, consumer, and industrial applications. Integrated high-voltage…
Is touchless pay safe? Are contactless payments secure? Contactless payments are safe (at least as safe as dipping your card in a reader), but they’re…
Is retrograde motion real? Astronomers use the term to refer to the occasional backwards motion of the planets as seen in Earth’s sky. When used…
Do triggers affect performance? Yes, a table with a trigger will not perform as well as it would without it. Logic dictates that doing something…
What is airootfs? The airootfs directory is used as the starting point for the root directory ( / ) of the live system on the…
Does a stepper motor need a brake? There is no need to “brake” a stepper motor. If you stop sending pulses, the driver will hold…