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101010

101010 is a binary numeral consisting of six digits. In base-2, it equals decimal 42, because 1×32 + 0×16 + 1×8 + 0×4 + 1×2 + 0×1 = 42. In other common bases, the same value is 2A in hexadecimal and 52 in octal. If written as an eight-bit byte with leading zeros, 00101010 corresponds to the asterisk character (*) in the ASCII character set.

In computing and digital electronics, the bit pattern 101010 is often used as a simple alternating pattern

Outside of numeric and engineering contexts, 101010 may appear in popular culture as a stylized representation

to
test
signal
integrity,
drive
timing,
or
illustrate
bitwise
operations.
It
is
a
basic
example
of
a
non-trivial
yet
easily
interpretable
sequence.
Patterns
such
as
101010
contrast
with
all-ones
(111111)
or
all-zeros
(000000)
patterns
used
for
broader
testing.
of
binary
or
computer
culture.
The
sequence
is
sometimes
cited
in
discussions
of
binary
notation
or
as
a
mnemonic
for
the
number
42,
famous
in
popular
culture
due
to
The
Hitchhiker's
Guide
to
the
Galaxy.