The Following Numbers Are in 8-Bit, Two's Complement Notation $$10000001 _ { 2 ^ { * } }$$

question 87

Multiple Choice

The following numbers are in 8-bit, two's complement notation.
Find the decimal equivalent for each.
- $$10000001 _ { 2 ^ { * } }$$

• A) 130
• B) −127
• C) 127
• D) −130
• E) None of these

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Definitions:

Retentive Timer

A type of timer in programmable logic controllers (PLCs) that retains its value even when the power is turned off or when the device is in an idle state.

Retentive Timers

Timers that retain their value even after the controlling input is turned off, allowing them to resume timing from the same point when reactivated.

Accumulated Time

The total time that has been recorded or tallied up, often used in contexts where time durations are important, such as in timers or monitoring systems.