diff --git a/src/mame/drivers/hh_sm510.cpp b/src/mame/drivers/hh_sm510.cpp
index a5e4c68e730..9e665825fad 100644
--- a/src/mame/drivers/hh_sm510.cpp
+++ b/src/mame/drivers/hh_sm510.cpp
@@ -115,6 +115,26 @@ The "Mini Classics" keychains are by Nelsonic, not Nintendo.
 Bassmate Computer (BM-501) is on identical hardware as G&W Multi Screen,
 but it's not part of the game series.
 
+****************************************************************************
+
+Regarding Электроника (Elektronika, translated: Electronics): It is not
+actually a company. It was a USSR brand name for consumer electronics,
+produced by factories belonging to the Ministry of Electronic Industry
+(Minelektronprom, МЭП).
+
+The LCD games were produced by: Angstrem, Mikron, Voschod (Russia), Billur
+(Azerbaijan), Kamerton, Evistor (Belarus), Severodonetsk Instrument-Making
+Plant (Ukraine) and more. Their most popular LCD game (Nu, pogodi!), is
+known to be initially produced by Evistor.
+
+Most of the games are marked "bootleg" in MAME, because the ROM contents are
+a 1:1 copy of Nintendo Game & Watch games. Known G&W cloned by Elektronika:
+Fire(FR-27), Octopus, Chef, Egg/Mickey Mouse, Donkey Kong Jr.(CJ-93),
+Spitball Sparky.
+
+The MCUs used were not imported from Sharp, but cloned by USSR, renamed to
+КБ1013ВК1-2 for SM5A and КБ1013ВК4-2 for SM510.
+
 ***************************************************************************/
 
 #include "emu.h"