Digital clock

Hi. It would really help if you could just answer this question. My brother seems to think the answer is no. But I would rather have mechanic answer this question. I thought it stayed on all the time, but I honestly do not remember, since I have not been driving it for several months--it will be getting repaired shortly. But first I really need to know if I need to replace my car radio. Thank you.

Hi, Roy. When I removed the fuse for the radio, the digital clock continued to work. Is it on a different circuit than the radio? Also, can this car develop a problem where it starts to drain the battery when it has been sitting and not being driven for several months? As I indicated in my first question, I replaced the battery that was in my car, since it was under warranty, and, as I also indicated, the new battery was also drained of power. When I first discovered that the old battery was dead, I had had something in the car that was pushing against the Set button on the clock for several weeks, and did not notice it. My brother thought this may have caused a problem. However, I can still set the time on the digital clock, so I am doubting that there is a short. If there is something else in the system that is causing the drain, how does one find out, since this is occurring when the car is not being driven, and has not been since last July, and the only thing that stays on is the digital clock? I am not sure when the problem with the battery draining started, but I'm pretty sure it was sometime during the winter months. This car is garaged, and the garage is part of my open basement, and we live in the South, in Arkansas, so it was not exposed to extremely hot or cold weather while sitting outdoors. What puzzles me the most is what sort of problem would develop when I have not been driving the car. My battery charger acted very strangely the first time it was connected to the old battery when I found out it was dead, and it took it a little while to indicate that it was charging. With the new battery, I have had no problems other than, of course, the fact that it discharged. Is there a way to determine the source of the drain? And does it need to be something that is actively working?

I will have a further question for you, but it is on an entirely different subject, although about the same car.