Computers have been used to schedule weather data collection for some time. Technological advances in computer microelectronics and communication systems continue to decrease computation costs and improve the performance of computer equipment. These hardware improvements, which were initially applied to data logging during the late 1970s, have enabled weather data users to obtain more weather data, over wider areas, with less effort and in a more timely fashion than ever before. Some data loggers now offer a programmable interface between the analog signals coming from meteorological sensors and the digital storage media. Although care must be taken to match meteorological sensor requirements to the characteristics of the data logger, data collection technology is becoming increasingly flexible.