Computer-displayed continuous-looking curves are actually stored sample sequences

Evidence

The first two mathematically expressed signals are continuous in time while the sample sequence, the unit impulse, and the pulse are discrete-time signals. All signals in Figure 3.1 are, in fact, discrete-time sample sequences in the computer memory, although some of them are plotted as continuous curves. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 333

Categorization

• CANDY: A neat observation that ‘continuous’ curves on your screen are secretly discrete samples in memory — a surprising bridge between math idealization and digital reality.
• corroborated: 2 independent passages support this claim — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 333
• XREF: connects to: Electronic reproduction stores images detached from context for instant mass retrieval — David Harvey, The Condition of Postmodernity: An…, 2153