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The standard pattern of Marxist nations' emblems during the Cold War was industrial images(eg. gearwheels, smokestacks), garlanded by agrarian products(usually wheat or rice, depending), with the occassional nod to traditional cultures(varies widely). The still-current emblem of the Lao People's Democratic Republic includes all three, with slightly more promience given to traditional culture than was typical.
The challenge: Get at least one or two(and possibly more) Marxist countries to put computers or computer related images in their emblems. If possible, keep the time-line of Communism roughly the same(eg. Bolshevik Revolution 1917, Soviet allies in Eastern Europe and China late 1940s; third-world decolonization 1950s, 1960s etc), and try to avoid entirely new entrants into the Communist club(eg. no "Japan Goes Communist"), though you can make minor adjustments on the peripherals(eg. "Soviets get a bit more of Germany").