**Block Category:** Boolean

**Inputs:** Real, complex, or fixed-point scalars, or
vectors or matrices.

**Description:** The and block produces the bitwise AND
of 2 – 256 scalar input signals.

Right-click the and block to assign a different function to the block.

**1. Three variable and**

Consider a variable *y* such that:

If *a* ≠ 6 and *b* > 2.2 and *c* < 7,
then *y* = cos(*t*); else *y* = 0

where *t *is simulation time and is the input to all
three parameters *a*, *b*, and *c*. This system is realized
as:

The output of the and block is true only when all
the three inputs are true. This happens in the range *t* = (2.2, 7), except
for the instant *t* = 6. This result is apparent in the upper plot. The
variable *y* is equal to cos(*t*) in the range *t* = (2.2, 7). At
the instant *t* = 6, variable *a* is momentarily false, and
consequently, *y* = 0 at *t *= 6, since the output of the
and block evaluates to false at that instant.