CPUs
only
understand
instructions
written
in
a
____________________
format
.
These
binary
instructions
are
called
____________________
code
.
But
it
is
very
difficult
for
a
human
to
understand
long
sequences
of
binary
.
So
programmers
developed
assembly
language
.
This
consists
of
a
set
of
human
-
readable
commands
,
called
____________________
.
Each
command
translates
into
a
specific
machine
code
number
.
Assembly
language
is
a
low
level
language
.
It
has
a
low
level
of
____________________
.
i
.
e
.
there
is
a
direct
link
between
an
instruction
in
assembly
and
the
machine
code
which
it
represents
.
Each
type
of
____________________
will
have
its
own
instruction
set
,
and
so
requires
its
own
version
of
assembly
language
.
Programs
written
in
assembly
run
fast
compared
to
those
written
in
a
high
level
language
.
Still
,
assembly
language
requires
that
the
programmer
write
each
CPU
instruction
by
hand
.
To
make
things
easier
,
programmers
developed
____________________
level
languages
.
A
high
level
language
has
a
set
of
____________________
such
as
PRINT
and
INPUT
.
Each
of
these
keywords
translates
into
more
than
one
CPU
instruction
.
These
languages
also
have
a
set
of
grammar
rules
(
____________________
)
.
These
set
out
how
to
combine
the
keywords
correctly
.
Examples
of
a
high
level
languages
are
____________________
,
Java
,
C
,
and
C
+
+
.
Unlike
assembly
code
,
programs
in
high
level
languages
can
be
used
on
any
computer
.
High
level
source
code
must
be
translated
into
machine
code
.
There
are
three
different
types
of
____________________
:
assemblers
,
compilers
and
interpreters
.
Each
of
these
translate
the
code
in
a
different
way
.
____________________
translate
assembly
code
into
machine
code
.
Different
CPUs
need
different
assemblers
.
A
____________________
converts
high
level
source
code
into
machine
code
instructions
.
The
compiler
reads
all
the
source
code
in
one
go
,
and
creates
an
executable
file
.
The
executable
file
will
run
the
program
without
the
compiler
or
source
code
present
.
The
third
type
of
translator
,
interpreters
,
convert
source
code
into
machine
code
instructions
.
It
then
immediately
____________________
the
instructions
,
line
by
line
.
An
____________________
Development
Environment
(
IDE
)
is
a
single
application
that
combines
all
the
tools
necessary
for
coding
.
The
tools
are
designed
to
work
seamlessly
together
.
The
tools
that
you
would
commonly
find
in
an
IDE
are
:
a
project
manager
,
a
code
editor
,
a
run
-
time
environment
,
a
____________________
and
a
translator
