Diagram

1. Component List:
   • SN74LS283N Full Adder IC
   • 8 SPST (Single Pole Single Throw) Switches
   • 8 10kΩ Resistors (Pull-up for switches)
   • 5 LEDs (4 sum outputs and 1 carry-out)
   • 5 330Ω Resistors (Current limiting for LEDs)
2. Pin Connections for SN74LS283N:

   +------------------------+
   | Pin Number | Pin Name  |
   +------------------------+
   | 1          | A1        |
   | 2          | B1        |
   | 3          | A2        |
   | 4          | B2        |
   | 5          | A3        |
   | 6          | B3        |
   | 7          | C0        |
   | 8          | GND       |
   | 9          | S1        |
   | 10         | S2        |
   | 11         | S3        |
   | 12         | S4        |
   | 13         | C4        |
   | 14         | A4        |
   | 15         | B4        |
   | 16         | VCC       |
   +------------------------+
   

3. Connections Diagram:

• Connect VCC to +5V.
• Connect GND to Ground.

• Use switches with pull-up resistors for the 4-bit inputs A and B.
  For A inputs:
  • Connect SW1:common to VCC through a 10kΩ resistor and to A1 $\left( \text{Pin 1} \right)$.
  • Connect SW2:common to VCC through a 10kΩ resistor and to A2 $\left( \text{Pin 3} \right)$.
  • Connect SW3:common to VCC through a 10kΩ resistor and to A3 $\left( \text{Pin 5} \right)$.
  • Connect SW4:common to VCC through a 10kΩ resistor and to A4 $\left( \text{Pin 14} \right)$.
  For B inputs:
  • Connect SW5:common to VCC through a 10kΩ resistor and to B1 $\left( \text{Pin 2} \right)$.
  • Connect SW6:common to VCC through a 10kΩ resistor and to B2 $\left( \text{Pin 4} \right)$.
  • Connect SW7:common to VCC through a 10kΩ resistor and to B3 $\left( \text{Pin 6} \right)$.
  • Connect SW8:common to VCC through a 10kΩ resistor and to B4 $\left( \text{Pin 15} \right)$.

• Connect a switch with pull-up for C0.
  • Connect SW9:common to VCC through a 10kΩ resistor and to C0 $\left( \text{Pin 7} \right)$.

• Connect LEDs with current-limiting resistors (330Ω) to the sum outputs with the anode to the output pin and the cathode to ground.
  Sum LEDs:
  • Connect S1 $\left( \text{Pin 9} \right)$ to the anode of LED1 with a 330Ω resistor in series, cathode to ground.
  • Connect S2 $\left( \text{Pin 10} \right)$ to the anode of LED2 with a 330Ω resistor in series, cathode to ground.
  • Connect S3 $\left( \text{Pin 11} \right)$ to the anode of LED3 with a 330Ω resistor in series, cathode to ground.
  • Connect S4 $\left( \text{Pin 12} \right)$ to the anode of LED4 with a 330Ω resistor in series, cathode to ground.
  Carry-out LED:
  • Connect C4 $\left( \text{Pin 13} \right)$ to the anode of LED5 with a 330Ω resistor in series, cathode to ground.

• Power Supply:
  • Connect U1:VCC to +5V.
  • Connect U1:GND to GND.
• Inputs:
  • Connect SW1:2 to U1:1 with a 10kΩ pull-up to VCC.
  • Connect SW2:2 to U1:3 with a 10kΩ pull-up to VCC.
  • Connect SW3:2 to U1:5 with a 10kΩ pull-up to VCC.
  • Connect SW4:2 to U1:14 with a 10kΩ pull-up to VCC.
  • Connect SW5:2 to U1:2 with a 10kΩ pull-up to VCC.
  • Connect SW6:2 to U1:4 with a 10kΩ pull-up to VCC.
  • Connect SW7:2 to U1:6 with a 10kΩ pull-up to VCC.
  • Connect SW8:2 to U1:15 with a 10kΩ pull-up to VCC.
  • Connect SW9:2 to U1:7 with a 10kΩ pull-up to VCC.
• Outputs:
  • Connect U1:9 to LED1:Anode with LED1:Cathode to GND.
  • Connect U1:10 to LED2:Anode with LED2:Cathode to GND.
  • Connect U1:11 to LED3:Anode with LED3:Cathode to GND.
  • Connect U1:12 to LED4:Anode with LED4:Cathode to GND.
  • Connect U1:13 to LED5:Anode with LED5:Cathode to GND.

Diagram

• Power Supply connected to VCC (Pin 16) and GND (Pin 8) of the SN74LS283N.
• Inputs:
  • A1 (Pin 5), B1 (Pin 6)
  • A2 (Pin 3), B2 (Pin 2)
  • A3 (Pin 14), B3 (Pin 15)
  • A4 (Pin 12), B4 (Pin 11)
  • Carry In (CI) (Pin 13)
• Outputs:
  • Sum Bit 1 ($\sum_1$) (Pin 4)
  • Sum Bit 2 ($\sum_2$) (Pin 1)
  • Sum Bit 3 ($\sum_3$) (Pin 10)
  • Sum Bit 4 ($\sum_4$) (Pin 7)
  • Carry Out (CO) (Pin 9)

1. A1-A4: These are likely the input bits from the first binary number.
2. B1-B4: These are likely the input bits from the second binary number.
3. C1,C4: These seem to be the output sum bits from the adder operation.
4. *_1-4: These could be the carry input and carry output bits for the adder operation, but their function isn't explicitly given.
5. VCC: Power supply pin for the IC.
6. GND: Ground reference for the IC.

1. Obtén el complemento a 2 del sustraendo: Para restar un número B de un número A $A - B$, primero convierte B en su complemento a 2. Esto se hace invirtiendo los bits de B y luego sumando 1 al resultado.
2. Prepara los ICs sumadores de 4 bits: Necesitarás dos ICs SN74LS283N para manejar la suma de 8 bits. Cada sumador acepta dos entradas de 4 bits y proporciona una salida de 4 bits con un bit de acarreo si es necesario.
3. Conexiones básicas de los ICs:
   • Conecta las entradas de alimentación (VCC) y tierra (GND) de ambos ICs adecuadamente.
4. Conectar A y el complemento a 2 de B a los sumadores:
   • Utiliza los bits de A y el complemento a 2 de B obtenido como las entradas de tus sumadores. Esto significa conectar los primeros 4 bits de A y el complemento a 2 de B al primer IC sumador $A0-A3, B’0-B’3$ y los siguientes 4 bits al segundo IC $A4-A7, B’4-B’7$.
5. Manejo del acarreo:
   • Conecta el bit de acarreo de salida del primer sumador (IC más bajo) al bit de acarreo de entrada del segundo sumador (IC más alto) para manejar correctamente los números de más de 4 bits.
6. Lectura del resultado:
   • La salida de ambos sumadores representa ahora la suma de A y el complemento a 2 de B, que es el resultado de A - B. Los primeros 4 bits de salida del primer IC y los 4 bits de salida del segundo IC forman el resultado de 8 bits de la operación de resta.
7. Interpretación del bit de acarreo:
   • El bit de acarreo de salida del segundo sumador (más alto) puede ser usado para identificar si hay overflow o underflow, dependiendo de si estás trabajando en un contexto sin signo o con signo, respectivamente.

Diagram

1. A1-A4 (Pines 5, 3, 14, 12): Entradas del primer número binario.
2. B1-B4 (Pines 6, 2, 15, 11): Entradas del segundo número binario.
3. S1-S4 (Pines 4, 1, 13, 10): Salidas de la suma de cada bit.
4. C0 (Pin 7): Entrada de acarreo inicial.
5. Cn+4 (Pin 9): Salida de acarreo final, que puede ser usada para encadenar sumadores adicionales.
6. VCC (Pin 16): Alimentación.
7. GND (Pin 8): Tierra.

Diagram