manual transmission as opposed to automatic shift transmissions.
Manual release valves as opposed to automatic pop-off release valves.
Manually sounded whistles or horns rather than systems with sensors that sound alarms.
A shovel as opposed to a backhoe.
A paper spread sheet vs. Microsoft Excell.
long division with a paper and pencil vs. a calculator
Either the input or the output can be manual or automated.
Manual systems require input, where automated or automatic systems use sensors to provide the input. Manual output is human generated products vs. machine produced.
I have an automatic washing machine that I load clothes into and out of, but I don't have to heat the water, load it by buckets or via hose into the tub, agitate the clothing with a wooden paddle, or wring out the clothing with two rollers that I crank to squeeze the water out of the clothing. I've worked with systems where I had to do some, most, or all of those. Manaul chothing washing could even involve a washboard and a tub or a stream and a rock. I by far prefer the automatic version in the laundry room right now.
I remember my first manual typwriter, an improvement over printing or writing long hand. I remember my electric typewriter, then word processor, then computer. I'm on my 8th or 9th computer now, and each one automates some new function.
Most agree that the automated luggage handling system designed for Denver International Airport never worked properly, and it was eventually replaced with a "less advanced" but more functional "manual" system.
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