local signalReceived = function(signal, connection)
    local this = connection.Item
    local mem = this.Components[2]

    if signal.value == "" then return end
    local input = tonumber(signal.value) or 1

    if input == 1 then
        if mem.value == "0" then mem.value = "1" else mem.value = "0" end
    elseif input == 0 then
        mem.value = "0"
    elseif input == -1 then
        mem.value = "1"
    end

    this.sendSignal(mem.value, "state_out")
end

Hook.Add("signalreceived.flipflopcomponent", "flipflopcomponent.signalReceived", signalReceived)