Clock Operation Analysis

I have examined my alarm clock. There are many problems but I picked two important ones. Below is the video demo of the problems.

Video Demo

The first problem is am and pm. I have to hold down the time button untill I reach 12 then I can switch from am to pm or the other way around.

The second problem is skipping the numbers while holding hour and minute buttons. If I skip the number then I have to go all the way to the end then come back to desired number.

My aproach solving these problems is adding buttons. If I add am and pm button I will save 11 steps for hour ( minutes do not matter for am and pm switch).
If I add back button to set the time and the alarm I will save 11 steps for the hour and 59 steps for the minute.

The notation of the Problem




My Solution



Seconds I will save is

11 seconds for am/pm both using the am/pm button and rewind button
11 seconds for hour change to set time by using rewind button
59 seconds for minute to set time by using rewind button
11 seconds for hour change to set alarm by using rewind button
59 seconds for minute to set alarm by using rewind button

My total saving for this kind of operation would be 151 seconds

My emotional state using this kind of alarm clock would be frustration. I would mostlikely stop using the clock which I have been doing for a while and use different clock such as my cell phone.

I will post a video of using paper-cut clock operation tomorrow.