Concentrations

12 Months Ended

Apr. 30, 2022

Financial instruments that subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents, and accounts receivable. Cash is placed in major financial institutions around the world. The Company’s cash deposits exceed insured limits.

Historically, a relatively small number of customers have accounted for a significant portion of the Company’s revenue. The particular customers which account for revenue concentration have varied from period-to-period as a result of the addition of new contracts, completion of existing contracts, and the volumes and prices at which the customers have recently bought the Company’s products. These variations are expected to continue in the foreseeable future.

The following table summarizes the significant customers’ accounts receivable and revenue as a percentage of total accounts receivable and total revenue, respectively:


Accounts Receivable	April 30, 2022		April 30, 2021
Customer A	14	%	35	%
Customer B	52	%	*
Customer C	*		11	%
Customer D	*		15	%
Customer E	*		11	%


	Year ended April 30,
Revenue	2022		2021		2020
Customer A	18	%	32	%	28	%
Customer B	30	%	*		*
Customer F	11	%	*		*
Customer G	10	%	*		*
Customer H	*		10	%	16	%
Customer I	*		12	%	*

* Less than 10% of total accounts receivable or total revenue.

The Company believes that the concentration of credit risk in its trade receivables is substantially mitigated by the high level of credit worthiness of its customers and the relatively short collection terms. The Company performs ongoing credit evaluations of its customers’ financial conditions and limits the amount of credit extended when deemed necessary based upon payment history and the customer’s current credit worthiness, but generally require no collateral.

The Company operates in markets that are highly competitive and rapidly changing. Significant technological changes, shifting customer needs, the emergence of competitive products with new capabilities, general economic conditions worldwide, the ability to safeguard patents and other intellectual property in a rapidly evolving market and reliance on assembly and test subcontractors, third-party wafer fabricators and other factors could affect the Company’s financial results.

The Company currently outsources all of its integrated circuit manufacturing to Taiwan Semiconductor Manufacturing Company with the remaining assembly and testing processes outsourced to other subcontractors primarily in Asia. Any disruption of or interference with the Company’s access to the goods or services from these subcontractors would impact the Company’s operations.