The green color is used to represent the implant layer. Symbolically it is represented as E-MESFET and it is formed when crossed by gate-metal.
12. _____ is used to represent ohmic contact.
A. yellow
B. red
C. green
D. brown
Answer: D
Brown is used to representing ohmic contact and it is used with source/drain contacts.
13. In the ring diagram, the green line is used to represent
A. E-MESFET
B. D-MESFET
C. Interconnection
D. Transistor
Answer: A
In the ring diagram, a green or dotted line represents E-MESFET while a yellow or solid line represents D-MESFET.
14. E-type and D-type are joined together using
A. metal 1
B. metal 2
C. vias
D. interconnectors
Answer: A
E-type and D-type features are joined together using a blue color which represents metal 1 layer.
15. What is the intermediate stage in converting ring diagram to mask layout?
A. switch logic
B. transistor level diagram
C. symbolic diagram
D. stick diagram
Answer: C
The ring diagrams can be turned into mask layout directly or through an intermediate symbolic representation stage.
16. In symbolic representation, rings are converted into
A. color codes
B. switches
C. sticks
D. circuit elements
Answer: D
Symbolic representation is the intermediate stage when turning a ring diagram to mask layout and here rings are represented as circuit elements.
17. For inverters color code used is
A. red followed by green paths
B. green followed by red paths
C. green followed by yellow paths
D. red followed by yellow paths
Answer: C
The green followed by yellow paths is drawn for inverters and inverter-based logic such as NOR gates.
18. In symbolic representation _________ is used to represent E-MESFET.
A. red transistor
B. green transistor
C. yellow transistor
D. blue transistor
Answer: B
In symbolic representation, the green transistor is used to represent E-MESFET and the yellow transistor is used to represent D-MESFET.
19. Global control paths are run in
A. metal 2
B. metal 1
C. transistor
D. interconnects
Answer: A
Long signal and global control paths are run in metal 2 parallel with the power rails.
20. _______ gives the instruction for the preparation of photomasks.
A. design layout
B. design rules
C. color codes
D. layout map
Answer: B
Design rules are the prescription for the preparation of photomasks that are to be used in the fabrication of integrated circuits.