This post explains for the converter.

The Part Number is ADC-0803, ADC0803.

The function of this semiconductor is A/D Converter.

Manufacturer: Harris

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Description

The ADC-0803 family are CMOS 8-Bit, successive-approxi-mation A/D converters which use a modified potentiometric ladder and are designed to operate with the 8080A control bus via three-state outputs. These converters appear to the processor as memory locations or I/O ports, and hence no interfacing logic is required.

The differential analog voltage input has good common-mode-rejection and permits offsetting the analog zero-input-voltage value. In addition, the voltage reference input can be adjusted to allow encoding any smaller analog voltage span to the full 8 bits of resolution. […]

 

Features

• Conversion Time < 100µs

• Easy Interface to Most Microprocessors

• Will Operate in a “Stand Alone” Mode

• Differential Analog Voltage Inputs

• Works with Bandgap Voltage References

• TTL Compatible Inputs and Outputs

 

Other data sheets are available within the file:

ADC0803LCN, ADC0803LCD, ADC0803LCWM, ADC0803LD

ADC-0803 Datasheet

A step-up converter, also known as a boost converter or voltage booster, is a type of DC-DC (Direct Current to Direct Current) power converter circuit or device used to increase the voltage level of a DC power source to a higher level. It is an essential component in various electronic applications where a higher voltage is required than what the input power source can provide.

Part Number: SX1308

Function: High Efficiency 1.2MHz, 2A, Step Up Converter

Package: SOT-23-6 Pin Type

Manufacturer: Suosemi

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Description

The SX1308 is a constant frequency, 6-pin SOT23 current mode step-up converter intended for small, low power applications. The IC switches at 1.2MHz and allows the use of tiny, low cost
capacitors and inductors 2mm or less in height.

Internal soft-start results in small inrush current and extends battery life. The features automatic shifting to pulse frequency modulation mode at light loads. The device includes under-voltage lockout, current limiting, and thermal overload protection to prevent damage in the event of an output overload.[…]

Features

1. Integrated 80mΩ Power MOSFET

2. 2V to 24V Input Voltage

3. 1.2MHz Fixed Switching Frequency

4. Internal 4A Switch Current Limit

5. Adjustable Output Voltage

6. Internal Compensation

7. Up to 28V Output Voltage

8. Automatic Pulse Frequency Modulation

Applications:

1. Battery-Powered Equipment

2. Set-Top Boxed

3. LCD Bais Supply

4. DSL and Cable Modems and Routers

SX1308 PDF Datasheet