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| Figure 13-15A. Schematic diagram of a data processing system. |

| Figure 13-15B Schematic diagram of a single function data processing system. |

| ing his problems or functions into a series of such yes or no decisions. This transcription, broadly, is called a program. Typically, a program may encompass many thousands of such yes and no decisions, but the fantastic speed with which such decisions are made make the computer feasible. Further, once these programs are made up for a particular function, they are thenceforth available generally whenever such a function is again under consideration.) |

| As an example, an electronic relay having the same characteristics as its electromagnetic counterpart is outlined below. It will accommodate the same time-current selectivity, namely, instantaneous, inverse and definite time. A functional block diagram of the time-current electronic relay showing the relationship of its components is contained in Figure 3-16A. Time curves are selected by means of a rotary selection switch; the times and the codes for their selection are: |

| 0 = Extremely Inverse |

| 4 = Definite Term |

| 1 = Very Inverse |

| 5 = Long Time, Extremely Inverse |

| 2 = Inverse |

| 6 = Long Time, Very Inverse |

| 3 = Short time |

| 7 = Long Time, Inverse |

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