Old appliances utilized technology that consumed a lot of electricity. The electric circuits used in designing these appliances were bulky and needed a lot of space to secure the wiring and the switching devices.  With the escalating cost and dwindling supply of fossil fuels researchers have develop more efficient circuits to operate appliances  more efficiently. These appliances use less power so your electric bill is lower.  Because of the compactness gained from improved technologies these appliances occupy less space so you can maximize the use of your living areas.

The old appliances used analog technology to operate them.  This is a linear measure.  For example if you wanted to take the temperature of a cake you are making in an oven in an old electric range, you would use an analog thermometer with either mercury or alcohol in the bulb.  It is similar to the one you use to take your temperature when you are sick. The mercury or alcohol will have to rise from the bulb at the bottom of the thermometer and pass a series of numbers before settling to the temperature of the cake. This sweeping action from one number to the final number is linear measurement or more simply, the measurement of length.

Smart appliances have digital thermometers installed on their instrument panels. There are also other time saving and efficiency devices installed there as well.  You can set many functions and go shopping and when you return home, the work is complete.  For a temperature reading, for example, you press the temperature button and you get a digital reading almost instantaneously. This digital reading is a numerical value.  These types of digital devices are now used extensively on major appliances.

Modern appliances use only a fraction of the electric power consumed by the older appliances.  Having a modern appliance at home can give us the flexibility to be more creative with our free time. We can maximize our time by utilizing modern appliances that are efficient and cost effective as well.

The problem with these digital devices is that your appliance could be costly to repair when it breaks down.  You will most likely have to replace a whole module to get the machine working again rather than replacing the part that is broken. These modules are expensive. In the older technology you only have to replace the part that is broken and the machine would be in operation again and you did not have to possess extensive knowledge to repair them. Smart appliances are here to stay. The savings in energy can be substantial.