The propulsion system's 16 monopropellant rocket engine thrusters, which control momentum and station-keeping on orbit, were upgraded to accept higher heat loading from the sunshield.
In addition, a hot plate should not be located in a place where the heat control of the appliance would be accessible to children and others unfamiliar with its operation.
Six bits can only encode 64 distinct characters, so these codes generally include only the upper-case letters, the numerals, some punctuation characters, and sometimes control characters.
