Ключевые слова: analysis, cardiology, chart, colorful, computer, contemporary, desktop, device, diagram, digital, digraph, display, electric, electrical, electricity, electronic, equipment, frequency, futuristic, gistogram, glyph, graph, heart pulse, internet, measurement, medical, medical chart, modern, monitoring, noise, oscillograph, oscilloscope, pc, pulse, scanner, science, screen, signal, sinusoid, spectogram, symbol, technology, thin, waveform, work, zigzag,