Soviet digital alarm clock "Elektronika 6.14-01" (Электроника 6.14-01) was produced in USSR during late 1980's and early 1990's.
The schematic and construction is very similar to Elektronika 6.15M, but
it has a plastic cabinet instead of wooden. It is also similar to
Elektronika 6.14-03, except that the buttons are at the rear side.
It was built with flat 4-digit 7-segment VFD display ILC4-5/7L (ИЛЦ4-5/7Л) or IVL1-7/5 (ИВЛ1-7/5) with 21mm high digits.
Integrated circuits (CMOS):
K176IE18 (К176ИЕ18) - Crystal oscillator and prescaler.
K176IE13 (К176ИЕ13) - Clock circuit (24h mode, 4-digit).
K176ID3 (К176ИД3) - BCD to 7 segment decoder.
The clock is controlled by 32768 Hz crystal. It has 2 levels of brightness. It is made for 220V 50Hz mains.
I measured the power consumption to be about 1.6 - 2.2W. Backup battery (9V) can be connected.
The original price of the clock was 40 Rubles.
Control buttons (top to bottom):
1. С - Alarm ON/OFF. This slide switch enables / disables alarm. When the alarm is enabled, a dot or bell symbol at the top of the display lights up.
2. Я - Brightness selector. Slide left/right to set low or high brightness.
3. К - Reset minutes. This will set minutes to 00. Pressing this button is required before setting the time.
4. Б - Display alarm. While holding this button, use buttons 5 and 6 to set alarm.
5. Ч - Set hours (can only be set when high brightness is selected).
6. М - Set minutes (can only be set when high brightness is selected).
I have found a gray version of this clock from 1990 and a brown version from 1991. In the brown one, a dried electrolytic capacitor had to be replaced.
