Digital wall clocks gained popularity in the late 1970’s and are known to tell time in a much better way than analog clocks. In these clocks, numbers are placed in a line instead of a circle and they blink or flip over as each second passes. These clocks can be powered by solar energy, battery or electricity and the time can be read in darkness also as the screen is back lit in different colors.
These clocks are widely available in the market and are much more affordable than traditional analog clocks. But you have to keep in mind that although they come cheap, their maintenance costs may be a matter of concern to you. They may consume a lot of electricity or their batteries may need to be changed more often than analog clocks. You must understand that the average life expectancy of a digital wall clock is 30000 hours which is 20 years.