Kvant 4s (DVK-4)
It has several Russian names: Квант-4С, ДВК 4, Электроника МС 1201.04. But all this means the same - the last and the best generation of the widely-used industrial DVK series of PDP11 computers in Soviet Russia.
No doubt it is the most powerful desktop PDP11 machine ever created for the small business and home users in USSR in late 80s. Unfortunately, the high price of the machine, relatively low number of units manufactured, rich of the precision metals, and the entire shutdown of the Soviet era made this Soviet PC to be one of the rarest and highly desirable machines among collectors in Russia today.
LSI-11 Bus  
Instruction set: LSI-11 (EIS and MMU)
Brand:
Elektronika
Computer
CPU:
1801 series CPU, 16-bit, 6 MHz, K1801VM3 CPU (LSI-11, EIS and MMU (MTPD, MTPI, MFPD, MFPI) included); nMOS
MIPS:
1.5
RAM:
1 MB
VRAM:
128 kB, Video Card: K1801VM2 CPU (1801 series CPU) on board
Display Mode:
Graphic, 800 x 480, Interlaced video, 4 colors
Graphic, 800 x 240, Progressive scan, 4 colors
Graphic, 400 x 240, Progressive scan, 16 colors
Graphic, 400 x 480, Interlaced video, 16 colors
Sound:
None
I/O Ports:
Current Loop, 9600 bps
Storage:
5¼-inch FDD, 2 x 5.25 Floppy Drives
HDD, 5, 10, 20 Mb Hard Drives, MFM encoding
Circa (year):
1989..., 1991...
Manufactured In:
U.S.S.R. (Soviet Union)