Abstract: A DAC including a first switch and a second switch. The first switch receives a digital signal to be converted, and the second switch receives the digital signal delayed by one-half of a clock signal. A third switch receives a current signal from a current source and the clock signal. The third switch alternately switches the current signal to the first and second switches so that when the clock signal is positive, the current signal is applied to the first switch and when the clock signal is zero, the current signal is applied to the second switch. The first switch will output the current signal during the first half of the clock cycle to a first output or a second output, and the second switch will output the current signal during the second half of the clock cycle to the first output or the second output.

Abstract: A DAC including a first switch and a second switch. The first switch receives a digital signal to be converted, and the second switch receives the digital signal delayed by one-half of a clock signal. A third switch receives a current signal from a current source and the clock signal. The third switch alternately switches the current signal to the first and second switches so that when the clock signal is positive, the current signal is applied to the first switch and when the clock signal is zero, the current signal is applied to the second switch. The first switch will output the current signal during the first half of the clock cycle to a first output or a second output, and the second switch will output the current signal during the second half of the clock cycle to the first output or the second output.

Abstract: A beverage dispensing device combined with a hat or helmet is disclosed. The beverage dispensing device consists of a rigid or semi-rigid hat or helmet with holders for holding a container on each side of the hat or helmet. A flexible tube placed inside of each container is joined to form a single tube that terminates in a person's mouth. A person placing the mouthpiece in his mouth and commencing the flow of beverage can enjoy the beverage while leaving his hands free.