Chest muscle, briefly

This time we are looking on the crossword clue for: Chest muscle, briefly.
it’s A 21 letters crossword puzzle definition. See the possibilities below.

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Possible Answers: PEC.

Last seen on: –LA Times Crossword 13 Mar 21, Saturday
Wall Street Journal Crossword – December 23 2019 – Chill Out
Wall Street Journal Crossword – December 17 2019 – Two-Part Harmony
USA Today Crossword – Aug 1 2019

Random information on the term “PEC”:

The System Management Bus (abbreviated to SMBus or SMB) is a single-ended simple two-wire bus for the purpose of lightweight communication. Most commonly it is found in computer motherboards for communication with the power source for ON/OFF instructions.

It is derived from I²C for communication with low-bandwidth devices on a motherboard, especially power related chips such as a laptop’s rechargeable battery subsystem (see Smart Battery System). Other devices might include temperature, fan or voltage sensors, lid switches and clock chips. PCI add-in cards may connect to an SMBus segment.

A device can provide manufacturer information, indicate its model/part number, save its state for a suspend event, report different types of errors, accept control parameters and return status. The SMBus is generally not user configurable or accessible. Although SMBus devices usually can’t identify their functionality, a new PMBus coalition has extended SMBus to include conventions allowing that.

PEC on Wikipedia