An analog input device comprising: at least one mounting panel; a matrix of analog push button assemblies mounted to the at least one mounting panel, each of the matrix of analog push button assemblies being depressible; a multiplexer including an input side and an output side, wherein the input side is coupled to the matrix of analog push button assemblies; an analog-to-digital converter which is coupled to the output side of the multiplexer to convert an analog signal, from at least one of the matrix of analog push button assemblies as a measure of an amount of depression of the at least one of the matrix of analog push button assemblies when the at least one of the matrix of analog push button assemblies is pressed by a user's finger, into a corresponding digital-step-value; characterized in that the analog input device further comprises: a lighting arrangement including a plurality of light sources respectively associated with the matrix of analog push button assemblies in a manner so as to individually illuminate each of the matrix of analog push button assemblies; a processor which is coupled to the analog-to-digital converter and which is configured to control the lighting arrangement to light the plurality of light sources based on the digital-step-value such that a number of the plurality of light sources being lit is proportional to the corresponding digital-step-value which correspond to the amount of depression of the at least one of the matrix of analog push button assemblies; and a communication interface configured to transmit a data packet to a host computing device, wherein the processor is configured to output the data packet including a button identity of the at least one of the matrix of analog push button assemblies pressed by the user's finger and the corresponding digital-step-value, and transmit the data packet via the communication interface to the host computing device. at least one mounting panel; a matrix of analog push button assemblies mounted to the at least one mounting panel, each of the matrix of analog push button assemblies being depressible; a multiplexer including an input side and an output side, wherein the input side is coupled to the matrix of analog push button assemblies; an analog-to-digital converter which is coupled to the output side of the multiplexer to convert an analog signal, from at least one of the matrix of analog push button assemblies as a measure of an amount of depression of the at least one of the matrix of analog push button assemblies when the at least one of the matrix of analog push button assemblies is pressed by a user's finger, into a corresponding digital-step-value; characterized in that the analog input device further comprises: a lighting arrangement including a plurality of light sources respectively associated with the matrix of analog push button assemblies in a manner so as to individually illuminate each of the matrix of analog push button assemblies; a processor which is coupled to the analog-to-digital converter and which is configured to control the lighting arrangement to light the plurality of light sources based on the digital-step-value such that a number of the plurality of light sources being lit is proportional to the corresponding digital-step-value which correspond to the amount of depression of the at least one of the matrix of analog push button assemblies; and a communication interface configured to transmit a data packet to a host computing device, wherein the processor is configured to output the data packet including a button identity of the at least one of the matrix of analog push button assemblies pressed by the user's finger and the corresponding digital-step-value, and transmit the data packet via the communication interface to the host computing device. a lighting arrangement including a plurality of light sources respectively associated with the matrix of analog push button assemblies in a manner so as to individually illuminate each of the matrix of analog push button assemblies; a processor which is coupled to the analog-to-digital converter and which is configured to control the lighting arrangement to light the plurality of light sources based on the digital-step-value such that a number of the plurality of light sources being lit is proportional to the corresponding digital-step-value which correspond to the amount of depression of the at least one of the matrix of analog push button assemblies; and a communication interface configured to transmit a data packet to a host computing device, wherein the processor is configured to output the data packet including a button identity of the at least one of the matrix of analog push button assemblies pressed by the user's finger and the corresponding digital-step-value, and transmit the data packet via the communication interface to the host computing device.