The main parts were 40 panels and three portable function tables (named A, B, and C).
 The layout of the panels was (clockwise, starting with the left wall):
Left wall
Initiating Unit
Cycling Unit
Master Programmer - panel 1 and 2
Function Table 1 - panel 1 and 2
Accumulator 1
Accumulator 2
Divider and Square Rooter
Accumulator 3
Accumulator 4
Accumulator 5
Accumulator 6
Accumulator 7
Accumulator 8
Accumulator 9
Back wall
Accumulator 10
High-speed Multiplier - panel 1, 2, and 3
Accumulator 11
Accumulator 12
Accumulator 13
Accumulator 14
Right wall
Accumulator 15
Accumulator 16
Accumulator 17
Accumulator 18
Function Table 2 - panel 1 and 2
Function Table 3 - panel 1 and 2
Accumulator 19
Accumulator 20
Constant Transmitter - panel 1, 2, and 3
Printer - panel 1, 2, and 3
An IBM card reader was attached to Constant Transmitter panel 3 and an IBM card punch was attached to Printer Panel 2.
 The Portable Function Tables could be connected to Function Table 1, 2, and 3.
The main parts were 40 panels and three portable function tables (named A, B, and C).  The layout of the panels was (clockwise, starting with the left wall):
Left wall
Initiating Unit
Cycling Unit
Master Programmer - panel 1 and 2
Function Table 1 - panel 1 and 2
Accumulator 1
Accumulator 2
Divider and Square Rooter
Accumulator 3
Accumulator 4
Accumulator 5
Accumulator 6
Accumulator 7
Accumulator 8
Accumulator 9
Back wall
Accumulator 10
High-speed Multiplier - panel 1, 2, and 3
Accumulator 11
Accumulator 12
Accumulator 13
Accumulator 14
Right wall
Accumulator 15
Accumulator 16
Accumulator 17
Accumulator 18
Function Table 2 - panel 1 and 2
Function Table 3 - panel 1 and 2
Accumulator 19
Accumulator 20
Constant Transmitter - panel 1, 2, and 3
Printer - panel 1, 2, and 3
An IBM card reader was attached to Constant Transmitter panel 3 and an IBM card punch was attached to Printer Panel 2.  The Portable Function Tables could be connected to Function Table 1, 2, and 3.
ENIAC