Some µP-based systems need a real-time clock. The µP's built-in timer can do the work, but it usually requires several milliamps of current to keep the timer running. If the main power drops, the ...

Writing at EETimes, Chris Turner and Richard York of ARM discuss how designing for LTE will have implications for microprocessors. Naturally, they focus on how to do it with an ARM-based system: in ...

Uninterruptible power supplies (UPSs) deliver power to computers and communications equipment when AC mains line voltages are too low or nonexistent. The equipment must switch to battery power, and ...