What’s on the Signal Types poster
A 6-row table: Distinction · One side · The other.
Each row is one axis, and a signal sits somewhere on all six.
- Time — Continuous x(t) — Discrete x[n]
- Amplitude — Analogue — Quantised
- Repetition — Periodic — Aperiodic
- Size — Finite energy — Finite power
- Symmetry — Even, x(−t) = x(t) — Odd, x(−t) = −x(t)
- Predictability — Deterministic — Random
A periodic signal has finite power and infinite energy, which is why it needs a Fourier series and not a transform.
Questions about the Signal Types poster
- What’s on the Signal Types poster?
- A 6-row table: Distinction · One side · The other. Each row is one axis, and a signal sits somewhere on all six. Time — Continuous x(t) — Discrete x[n]; Amplitude — Analogue — Quantised; Repetition — Periodic — Aperiodic; Size — Finite energy — Finite power; Symmetry — Even, x(−t) = x(t) — Odd, x(−t) = −x(t); Predictability — Deterministic — Random. A periodic signal has finite power and infinite energy, which is why it needs a Fourier series and not a transform.
- Who is the Signal Types poster for?
- Signal Types belongs to the Electrical Engineering section rather than to a school year, because engineering is not something one grade owns. Anyone learning signals & systems can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Signal Types poster?
- Classify the signal first: series or transform, sum or integral, follows from these rows. A wall chart earns its place by being glanceable from where the work is happening, so Signal Types belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
- What other posters go with Signal Types?
- Fourier Series, Filter Responses and Bode Plots sit alongside Signal Types in the Electrical Engineering section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Fourier SeriesFilter ResponsesBode Plots
- Is the Signal Types poster free to download and print?
- Yes. Signal Types downloads as a free PDF with no account, no email and no watermark, like everything else in the Electrical Engineering section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Signal Types poster print at?
- Signal Types is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Signal Types loses nothing.Printing guide
Related posters
Charts that sit alongside Signal Types on the same wall.
Browse every Electrical Engineering poster, or start from the full catalogue.