A Guide to Clocks and Clock Software Downloads For Windows Clocks are one of the most basic devices humans have invented. They are a means to tell time, and can be both analogue and digital. Clocks are generally made of wood, with some having Arabic numeral displays. There are several types of clocks, with the largest ones being floor clocks. Some grandfather clocks are tall, freestanding, and have a decorative look. The first domestic clocks were smaller versions of large public clocks. They could be found in wooden houses, and were often displayed in a decorative way. Early mechanical clocks were produced in Europe in the 13th century, and were characterized by the sound of bells. These were powered by a weighted rope. Clocks that use swinging weights or coiled springs appeared in the 1500s. In the 1800s, electrically powered clocks were introduced. Both technologies are now replaced by digital clocks. Clocks can have a variety of display formats, including 12-hour notation (from 00 to 23), and 24-hour notation. All of these display systems require an AM/PM indicator. A clock can be analogue, and can be made to tell the time using quartz crystal or pendulum. Atomic clocks are the most accurate, but they normally have digital displays. Clocks are also available in a variety of sizes, from miniature to large. Some can be as tall as eight feet. While they have a decorative look, they are generally designed to be functional and work well in rustic homes. If you want to control your time more efficiently, consider the use of a third-party timer application. One of the most popular free apps is Clockify. It allows you to track your time, add projects, and schedule breaks. You can even set it to start automatically when your computer is turned on or off.