Electronic Diagrams Questions

Electronic diagrams simplification: Are interrupted signal paths (breaks with clear labels or reference notations) an acceptable and recommended method to simplify complex schematics?

PCB CAD placement tools: Do CAD component-layout programs themselves guarantee the best possible parts placement, or do they primarily assist engineers who must still apply design rules and judgment?

Identification of replaceable parts on schematics: For electronic diagrams intended for fabrication and service, must each separately replaceable part be identified with a unique reference designation and related notes?

Use of standardized symbols on diagrams: Should schematic symbols follow nationally or internationally approved standards to ensure consistent interpretation across organizations and countries?

Multi-element parts in schematics: For clarity and routing simplicity, should sections of multi-element parts (for example, a dual op-amp or quad logic gate) be drawn as separate schematic symbols?

Best practices for schematic wiring: Should conductor lines be drawn primarily horizontal and vertical, minimizing bends and crossovers, to make electronic diagrams easier to read and maintain?

Terminal identification on diagrams: When terminals or leads are identified by colors, symbols, or polarity marks, should these identifiers be clearly indicated on the electronic diagram for accuracy and serviceability?

Grouping related components on schematics: Is it good practice to indicate groups of related components by enclosing them with a dashed-line box and a label to show functional association?

Whitespace for reference designations: When arranging schematic symbols, should you leave adequate blank space near each symbol for reference designations, pin numbers, and explanatory notes, or can this space be omitted?

Printed circuit boards (PCBs) in electronic drafting: PCBs are widely adopted in modern electronics and, in most applications, they have replaced earlier hand-wiring methods such as point-to-point wiring on terminal strips or perfboard. Evaluate this statement for general engineering practice.