Three large computer companies, each of which already operates daily numbers games in several states, have enlisted at least two dozen black District of Columbia business executives as partners in their efforts to win the lucrative contract to operate a legal numbers game in the city.

The companies, General Instrument Corp., Control Data Corp. and Gaming Systems Corp., all have promised their minority partners at least 60 percent of the equity in the joint venture firms they have formed, more than twice the 25 percent minority participation level required by D.C. law.

The extent of minority participation here stems from conditions laid down by the five-member D.C. Lottery Board and from the fierce competitiveness of the lottery industry.

The board decided that bids would be judged equally on the percentage of minority participation and the expected cost of operating the game. The lottery firms responded by pledging minority participation rates that are much higher than the levels of local involvement, minority or otherwise, in the 14 states where they are already running legal numbers games.

The D.C. board plans to award its contract next week and start a daily numbers game similar to the one in Maryland by late June or early July.

The three companies bidding for the D.C. contract manage all the daily numbers games now operating throughout the United States and regularly bid against one another for new contracts. The number of daily numbers games is increasing as more and more financially pinched states start lotteries in the belief that they will yield millions of dollars in new revenue.

In different ways, all three have pledged that large portions of the management of the daily numbers operation in D.C., including much of the computer work, advertising and public relations, will be performed by minority-controlled firms, including some that have been created solely in an effort to win the right to operate the numbers game, a venture that may be worth $4 million annually, possibly more, to the winning bidder.

Because of the secrecy surrounding the bids, it is not known how much, if any, money the minority business executives have been required to invest in the respective joint ventures to cover start-up costs.

Here are the players in the Lottery Bidders' Sweepstakes * General Instrument of New York, through one its divisions, American Totalisator Systems Inc. of Hunt Valley, Md., has joined with IBS Digit Inc., a local minority-owned computer systems firm, to form D.C. Data Co. IBS will control 60 percent of the new firm.

The president of IBS is Marion (Duke) Greene, the head of International Business Services Inc., a 14-year-old D.C. computer firm, while its other chief investor is William B. Fitzgerald, the president of Independence Federal Savings and Loan Association and a confidant of D.C. Mayor Marion Barry.

In addition, D.C. Data plans to hire Atlantic Advertising, a new firm run by Jeanne Clarke, now head of the Jam advertising agency and onetime campaign press secretary for former mayor Walter E. Washington, to handle advertising for the daily numbers game if it wins the contract.

IBS Digit has pledged to give 15 percent of its share of the lottery profits (9 percent of the joint venture's total) to the Frederick Douglass Foundation, a newly created group that would disburse money to promote job training, new businesses and educational and cultural programs for blacks.

The money would be distributed by a foundation board currently composed of David H. Eaton, president of the D.C. Board of Education; Jeanus B. Parks, a Howard University law professor; Cleveland L. Dennard, president of Atlanta University and former president of the Washington Technical Institute, one of the predecessor institutions to the University of the District of Columbia, and Edith Simpson, a businesswoman. American Totalisator, known in the gaming industry as AmTote, now operates the daily numbers games in Massachusetts, New Hampshire, Maine, Ohio, New Jersey and Vermont. * Control Data of Minneapolis has joined forces with Sterling Systems Inc., a computer firm based in McLean, and others to form Columbia Gaming Services Inc. The board chairman of the new firm is Robert L. Quinichett, now head of Sterling, which Black Enterprise magazine identified as the nation's 29th largest black-owned firm in 1981, the last year for which sales records are available. Columbia Gaming's president is Thomas I. Ahart, now president of Dyma Associates, a management and marketing consulting firm.

Columbia Gaming has agreed to hire Hughes Concepts, a black-owned advertising firm, to do the lottery advertising if it wins the contract. Those familiar with Columbia Gaming's bid say it would provide for at least 60 percent minority ownership. Control Data now runs the games in Maryland, New York, Pennsylvania, Illinois and Delaware. * Gaming Systems of Providence, R.I., the third bidder, has joined with four minority-owned D.C. companies, which together will share 60 percent of the equity in a firm called Lottery Technology Enterprises, according to a source familiar with the proposal.

The four firms are Network Technical Services Inc., an electronics firm that would assemble and maintain the lottery's computer terminals; Opportunity Systems Inc., a computer firm that would operate the lottery's data center; New Tech Games Inc., a new firm that would be Lottery Technology's administrative arm; and Prism Corp., which would train the lottery ticket sales agents and produce some of the lottery advertising. P. Leonard Manning, a D.C. businessman, would be Lottery Technology's general manager.

In addition, Gaming Systems' proposal says it would funnel lottery receipts through the Industrial Bank of Washington, the fifth largest black-owned bank in the country, and listed 13 minority firms it would hire as needed to perform a variety of other functions.

Gaming Systems now operates the daily numbers systems in Rhode Island, Michigan and Connecticut, four games in Canada and one in Australia and has won the Arizona daily numbers contract.

The winning firm will be paid a percentage of the total revenue that is collected from sales of tickets in the game, in which players will select a three-digit number and then wait till the end of the day to see if it is drawn as that day's winner. Someone who buys a 50-cent ticket, the minimum wager, and correctly guesses the winning number would win $250, the same 500-to-1 payout ratio used in Maryland.

D.C. lottery officials plan to continue to offer the instant-winner lottery tickets that have been sold since last August, although they expect that sales in these games may drop when the daily numbers contest starts.

The lottery board, citing a D.C. law prohibiting release of much information about companies' proposals, has refused to disclose the bids submitted by the three firms or any details of the voluminous proposals.

In fact, the lottery board has gone to extraordinary lengths to ensure that no one can tamper with the bids while they are being considered, posting a round-the-clock guard outside a room where the proposals are kept at the lottery's headquarters at 1420 New York Ave. NW.

Based on lottery contracts in other states, the companies probably are asking that they receive about 4 to 6 percent of the amount wagered, or $4 million to $6 million of the anticipated $100 million or more a year in annual revenue. All three companies also refused to say what their bids are for fear that the information would give their competitors some advantage while they discussed their proposed contracts with the lottery board.

Brant Coopersmith, the lottery board's chairman, said that representatives of each of the three companies will be called individually to the lottery offices this week and asked if they can make an even better bid than they already have, a so-called "best and final" offer, so that the game costs the District the least amount possible to operate.

He said the board has visited offices of all three major computer firms to consider each company's ability to run a lottery.

Despite such consideration and security precautions, Coopersmith readily conceded, "The odds are someone who loses is going to sue." graphics/illustration: The Lottery Race By Pat Morrison for TWP and asked if they can make an even better bid than they already have, a so-called "best and final" offer, so that the game costs the District the least amount possible to operate.

He said the board has visited offices of all three major computer firms to consider each company's ability to run a lottery.

Despite such consideration and security precautions, Coopersmith readily conceded, "The odds are someone who loses is going to sue."